#1
24th July 2014, 08:08 AM
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KPCL Question Paper
Please provide me question paper for KPCL Mechanical for Assistant and Junior Engineer examination soon ?
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#2
24th July 2014, 10:17 AM
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Re: KPCL Question Paper
Here I am giving you question paper for KPCL Mechanical for Assistant and Junior Engineer examination......... The chronological order of strokes in a four stroke petrol engine is: 1] Suction stroke, working stroke, compression stroke and exhaust stroke. 2] Suction stroke, compression stroke, working stroke and exhaust stroke. 3] Compression stroke, working stroke, suction stroke and exhaust stroke. 4] Compression stroke, suction stroke, working stroke and exhaust stroke. The enthalpy of steam is defined as: 1] Difference of internal energy and product of pressure and volume. 2] Product of internal energy and pressure. 3] Sum of internal energy and product of pressure and volume. 4] Amount of heat change divided by the absolute temperature. Which of the following operations can be performed using a drilling machine? A. Reaming B. Countersinking C. Spot Facing D. Thread tapping 1] Only A, B and D 2] Only B, C and D 3] Only A, B and C 4] All of these Which of the following are the advantages of impulse turbine over reaction turbines? A. Occupies less space per unit power. B. Compounding is not necessary for speed reduction as the rotor speeds are usually low. C. Suitable for high power generation. 1] B and C only 2] A only 3] C only 4] A and C only Maximum power transfer through line V1= 110 kv, V2= 100kv, X=22 ohm is a 500 MW b 500 KW c 250 MW d 250 KW Ans: 500 MW Q.Which type of power plant requires maximum expenditure a Hydel power plants b Nuclear power plants c Thermal power plants d Gas based power plants Q.Base load of a power station stands for a 2-4 hours/day b 4-8 hours/day c 8-12 hours/day d 12-24hours/day Ans: 12-24hours/day Q.A wire is placed on the top of a transmission line to protect from a surge high voltage b Direct lightning strocks c indirect lightnin strocks d Switching over voltages Ans: Direct lightning strocks Q.A wire is placed on the top of a transmission line acts as a acts as a phase wire b acts as neutral c acts as a transmission wire d acts as ground wire Which of the following can be magnified by magnetic amplifier (a) voltage (b) current (c) power (d) none of above The inductance is not used in lag network because of (a) big size b) time delay and hysteresis losses (c) high reactance (d) none of these Saturation in a stable control system can cause (a) conditional stability (b) over damping (c) low level oscillations (d) high level oscillations Excessive noise in control systems can cause a) reduction in bandwidth (b) reduction in gain (c) saturation in amplifying stages (d) oscillations The type-0 system has (a) net pole at the origin (b) no pole at the origin (c) simple at one origin (d) two poles at the origin In control systems, excessive bandwidth should be avoided because (a) noise is proportional to bandwidth (b) it leads to low relative stability (c) it leads to slow speed of response (d) none of these In most systems, an increase in gain leads to (a) larger damping ratio (b) smaller damping ratio (c) constant damping ratio (d) none of these A step function is applied to the input of a system and output is of the form y = t, the system is (a) stable (b) unstable (c) not necessarily stable (d) conditionally stable The function of the safety resistor in ohm meter is to (a) limit the current in the coil (b) increase the voltage drop across the coil (c) increase the current in the coil (d) protect the battery Which of the following instruments is free from hysteresis and eddy current losses? (a) M.l. instrument (b) electrostatic instrument (c) electrodynamometer type instrument (d)all of these The dielectric loss of a capacitance can be measured by (a) Wien bridge (b) Owen bridge (c) Schering bridge (d) Maxwell bridge Reed frequency meter is essentially a (a) recording system (b) deflection measuring system (c) vibration measuring system (d) oscillatory measuring system In measurements made using a Q meter, high impedance elements should preferably be connected in (a) star (b) delta (c) series (d) parallel A digital voltmeter measures (a) peak value (b) peak-to-peak value (c) rms value (d) average value 1. Pick out the one which does not belong to majority of items i.e; the odd thing a. Leaf spring suspension b. Coil spring suspension d. Air suspension Ans : A 2. Which of the following factors is not related to the effect of independent front suspension a. Reducing the unsprung masses b. Reducing tyre wear d. Elimination of gyroscopic couples Ans : D 3. The main function of the suspension system is best described as a. Reducing the body movement b. Reducing the accelerations to which the body is subjected Ans : A 4. Helper springs are usually used a. In heavy vehicles in suspension system to obtain a two stage spring rate b. In vehicles to improve the load capacity of suspension system d. To stiffen the suspension Ans : A 5. Parts of the brake system include brake-shoes and a. Master brake cylinder b. Engine cylinders Ans : C 6. In the power steering assembly having four valves, two distribution and two reaction during neutral, or straight- ahead driving, all four valves are a. Fully closed b. Partly open Ans : C 7. As the steering wheel is turned a worm gear on steering shaft causes the end of the ………….. to swing toward one side or the other of the car a. King pin b. Steering gear Ans : C 8. On the coaxial steering gear, the gear housing is lubricated a. From the hydraulic system b. From the worm housing Ans : A 9. Turning the adjustment screw to make the over centre adjustment causes a. End-wise movement of the ball nut b. End-wise movement of the Pitman shaft d. End-wise movement of steering shaft Ans : A 10. Air resistance to a car at 20 km/hr is R .The air resistance at 40 km/hr would be a. R b. 2R d. R2 Ans : C 11. Which one of the following is not apart of the chassis a. Wheels b. Front axle d. Passenger seats Ans : D 12. In the linkage type of power steering system, the piston rod is attached at one end to a. A tie rod b. A connecting rod Ans : B 13. In the linkage type of power steering system, the swinging end of the pitman arm actuates a. A spool valve b. A tie rod d. An idler lever Ans : B 14. In the constant control power steering unit the spool valve is moved by a. A pivot lever b. A valve rotor Ans : B 15. In the coaxial power steering unit, the spool valve a. Rotates b. Moves end-wise Ans : A 16. In the Saginaw rotary valve unit, rotation of the valve spool from the neutral position results in application of hydraulic oil pressure from the oil pump to one or the other and of the a. Pitman arm b. Connecting rod d. Disc clutch Ans : C 17. In the Saginaw in line unit, end-wise movement of the valve spool is caused by reaction between the a. Worm and ball nut b. Piston and valve Ans : B 18. In the Saginaw in line power steering unit, the valve spool is centered in neutral by a. Centering springs b. Oil pressure d. Torsion bar Ans : D 19. Three types of oil pumps used in power steering system are vane, roller and a. Shoe b. Slipper Ans : C 20. The two basic types of power steering system are a. Integral and valve b. Booster and power Ans : C 21. In the steering gear of the linkage connecting to the wheel, steering knuckle, a gear sector, stud or toothed roller is meshed with a. A worm b. A ball bearing Ans : A 22. The steering gear is a device for converting the rotary motion of the steering wheel into a. To and fro movement b. Up and down movement Ans : A 23. In the steering gear, a gear sector or toothed roller is meshed with a. A Worm b. A ball bearing d. Steering wheel Ans : A 24. The only time the steering wheel requires replacement would be a. Wheel bearing replacement b. An accident Ans : B 25. As the steering wheel is turned a worm gear on the steering shaft causes the movement of the a. King pin b. Steering gear Ans : C 1. A 1.6 m3 capacity tractor loaded works at a site with an effective per-round-trip time of 64 seconds. Effective delivery of excavated material is 90%. If utilization is 50 minutes per hour working, what will be the productivity in a 4-hour shift? (a) 253 m3 (b) 262 m3 (c) 270 m3 (d) 282 m3 Ans. (c) 2. Match List-I with List-II and select the correct answer using the code given below the lists: List-I List-II (Equipment) (Category) A. Derrick crane 1. Excavating equipment B.Hoe 2. Hauling equipment C. Clamshell 3. Hoisting ‘equipment D. Dumper Truck 4. Vertical lifting equipment Code: A B C D (a) 2 1 4 3 (b) 3 1 4 2 (c) 2 4 1 3 (d) 3 4 1 2 Ans. (b) 3. A 1.75 m3 capacity tractor loader has forward loaded speed of 240 m/min, returning unloaded speed of 300 m/min and operates at 80% of the specified speed. It hauls earth over a distance of 60 m with fixed time per trip being 25 seconds. What is its effective cycle time? (a) 54.25 seconds (b) 55.50 seconds (c) 56.75 seconds (d) 58.75 seconds Ans. (d) 4. Which one of the following relates to determination of critical path in PERT? (a) Event oriented slack (b) Activity oriented float (c) Event oriented float (d) Activity oriented slack Ans. (a) 5. In order to achieve a safe compressive strength of 20 kg/cm2 in a brick masonary, what should be the suitable range of crushing strength of bricks? (a) 35kg/cm2 to 70 kg/cm2 (b) 70 kg/cm2 to 105 kg/cm2 (c) 105 kg/cm2 to 125 kg/cm2 (d) More than 125 kg/cm2 Ans. (b) 6. What is the requirement of water (expressed as % of cement w/w) for the completion of chemical reactions in the process of hydration of OPC? (a) 10 to 15% (b) 15 to 20% (c) 20 to 25% (d) 25 to 30% Ans. (c) 7. Which factors comprise maturity of concrete? (a) Compressive strength and. flexural strength of concrete / (b) Cement content per cubic metre and compressive strength of concrete (c) Curing age and curing temperature of concrete (d) Age and aggregate content per cubic metre of concrete Ans. (c) 8. What is the minimum value of individual tests results (in N/mm2) for compressive strength compliance requirement for concrete M20 as per codal provision? (a) fck 1 (b) fck 3 (c) fck 4 (d) fck 5 Ans. (c) 9. For what reason is it taken that the nominal maximum size of aggregate may be as large as possible? (a) Larger the maximum size of aggregate, more the cement required and so higher the strength. (b) Larger the maximum size of aggregate, smaller is the cement requirement for particular water cement ratio and so more economical the mix. (c) Larger the maximum size of aggregate, lesser are the voids in the mix and hence also lesser the cement required. (d) Larger the maximum size of aggregate, more the surface area and better the bond between aggregates and cement, and so higher the strength. Ans. (d) 10. What is the modulus of elasticity of standard timber (Group B) in (MN/cm2)? (a) 0.5 to 1.0 (b) 1.0 to 1.25 (c) 1.25 to 1.5 (d) 1.5 to 1.75 Ans. (b) 11. What is the treatment for making timber fire- resistant? (a) ASCU treatment (b) Abel’s process (c) Creosoting (d) Tarring Ans. (b) 12. How is the process of treatment of wood using a preservative solution and forcing air in at pressure designated? (a) Ruping process (b) Lawri process (c) Full cell process (d) Empty cell process Ans. (d) 13. Modular bricks are of nominal size 20 × 10 × 10cm and 20% of the volume is lost in mortar between joints. Then what is the number of modular bricks required per cubic meter of brick work? (a) 520 (b) 500 (c) 485 (d) 470 Ans. (d) 14. A solid metal of uniform sectional area throughout its length hangs vertically from its upper end. Devails of the bar are: length = 6m, material density = 8 × 10-5 N/mm3 and B =2 × 1o5 N/mm2. What will be the total elongation of the bar in mm? (a) 288/104 (b) 48/104 (c) 144/104 (d) 72/104 Ans. (d) 15. What is the representative geometric mean size of an aggregate sample if its fineness modulus is 3.0? (a) 150 µm (b) 300 µm (c) 600 µm (d) 12 µm Ans. (c) 16. A square steel bar of 50 mm side and 5m long is subjected to a load where upon it absorbs a strain energy of 100 J. What is its modulus of resilience? (a) 1/125 Nmm/ mm3 (b) 125 mm3/Nmm (c) 1/125 Nmm/ mm3 (d) 100 mm3/Nmm Ans. (a) 17. What is the ratio of flexural strength (fcr) to the characteristic compressive strength of concrete (fck) for M25 grade concrete? (a) 0.08 (b) 0.11 (c) 0.14 (d) 0.17 Ans. (c) 18. Which of the following tests compares the dynamic modulus of elasticity of samples of concrete? (a) Compression test (b) Ultrasonic pulse velocity test (c) Split test (d) Tension test Ans. (b) 19. Which one of the following is correct regarding the most effective requirements of durability in concrete? (a) Providing reinforcement near the exposed concrete surface (b) Applying a protective coating to the exposed concrete surface (c) Restricting the minimum cement content and the maximum water cement ratio and the type of cement (d) Compacting the concrete to a greater degree. Ans. (c) 20. What is the radius of Mohr’s circle in case of bi-axial state of stress? (a) Half the sum of the two principal stresses (b) Half the difference of the two principal stresses (c) Difference of the two principal stresses (d) Sum of the two principal stresses Ans. (b) 21. A square beam laid flat is then rotated in such a way that one of its diagonal becomes horizontal. How is its moment capacity affected? (a) Increases by 41.4% (b) Increases by 29.27% (c) Decreases by 29.27% (d) Decreases by 41.4% Ans. (d) 22. A timber beam is 100 mm wide and 150 mm deep. The beam is simply supported and carries a central concentrated load W. If the maximum stress in shear is 2 N/mm2, what would be the corresponding load W on the beam? (a) 20 kN (b) 30 kN (c) 40 kN (d) 25 kN Ans. (c) 23. A 40 mm diameter shaft is subjected to a twisting moment M2. If shear stress developed in shaft is 5 N/mm2,.What is the value of the twisting moment? (a) 628.8 Nm (b) 328.4 Nm (c) 62.8 Nm (d) 30.4 Nm Ans. (c) 24. A fixed end beam of uniform cross-section is loaded uniformly throughout the span. What is the proportion of the bending moment at the centre to the end moment considering only elastic conditions? (a) 1 : 1 (b) 1 : 2 (c) 1 : 4 (d) 2 : 3 Ans. (b) 25. Steel of yield strength 400 MPa has been used in a structure. What is the value of the maximum allowable tensile strength? (a) 240 MPa (b) 200 MPa (c) 120 MPa (d) 96 MPa Ans. (a) |
#3
23rd February 2015, 12:46 PM
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Re: KPCL Question Paper
I am searching for the KPCL Electrical Question Paper for Assistant and Junior Engineer? Can you please provide me the KPCL Electrical Question Paper for Assistant and Junior Engineer?
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#4
23rd February 2015, 02:44 PM
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Re: KPCL Question Paper
You are searching for the KPCL Electrical Question Paper for Assistant and Junior Engineer. Here I am providing you the KPCL Electrical Question Paper for Assistant and Junior Engineer. This is looks like as follows: 1. Mho relay is usually employed for the protection of a) Short lines only b) Medium lines only c) Long lines only d) Any line Ans: Long lines only 2. A modern power semiconductor device IGBT is combines the characteristics of a) BJT and MOSFET b) FCT and GTO c) SCR and MOSFET d) SCR and BJT Ans: BJT and MOSFET 3. For a single-phase a.c. to d.c. controlled rectifier to operate in regenerative mode, which of the following conditions should be satisfied? a) Half –controlled bridge, a 90°, source of e.m.f. in load c) Full-controlled bridge, a > 90°, source of e.m.f. in load d) Full-controlled bridge, a 90°, source of e.m.f. in load 4. Which is the most suitable power device for high frequency ( more 100 kHz) switching application? a) Power MOSFET b) BJT c) SCR d) UJT Ans: Power MOSFET 5. In a thyristor Latching current is ________ than Holding current a) Equal b) Less c) Greater d) None Ans: Greater 6. The transfer function of a system is 10/(1+s) when operating as a unity feedback system, the steady state error to a step input will be a) 0 b) 1/11 c) 10 d) Infinity Ans: 1/11 7. Which one of the following statements for a dc machine which is provided with inter pole winding (IW) as well as compensating winding (CW) is correct a) Both IW and CW are connected in series with Armature winding b) Both IW and CW are connected in parallel with Armature winding c) IW connected in series but CW is connected in parallel with Armature winding d) CW connected in series but IW is connected in parallel with Armature winding Ans: Both IW and CW are connected in series with Armature winding 8. A 0-10 mA PMMC ammeter reads 5mA in a circuit; its bottom control spring snaps out suddenly the meter will now read. a) 5mA b) 10mA c) 2.5mA d) 0 Ans: 0 9. A dc cumulatively compounded motor delivers rated load torque at rated speed. If series field is short circuited, then the armature current and speed will a) Both increases b) Both decreases c) Increases and decreases d) Decreases and increases Ans: Both increases 10. Moving coil in dynamometer wattmeter connected a) In series with fixed coil b) Across supply c) In series with load d) Across load Ans: Across supply 11. In an induction machine, if the air gap increased a) Speed will be reduced b) Efficiency will be improved c) Power factor will be lowered d) Breakdown torque will be reduced Ans: Power factor will be lowered 12. A CRO screen has ten divisions on the horizontal scale. If a voltage signal 5 sin 314t+45 deg)is examined with a line base settings of 5 msec/div, the number of cycles of signal displayed on the screen will be a) 0.5 cycles b) 2.5 cycles c) 5 cycles d) 10 cycles Ans: 2.5 cycles 13. A 3-phase 50HZ SCIM takes a power input of 30 KW at its full load speed of 1440 rpm. Total stator losses are 1 KW. The slip and rotor ohmic losses at full load are a) 0.02, 600 W b) 0.04, 580 W c) 0.04, 1160 W d) 0.04, 1200 W Ans: 0.04, 1160 W 14. Thermocouple is used to measure a) AC b) DC c) Both d) None Ans: Both 15. The two watt meters measurement the ratio of two meter readings is –(1-sqrt3) 1+sqrt3) then the power factor is a) 1 b) 0.866 c) 0.707 d) 0 Ans: 0.707 16. Hays bridge is used to measure___________ and Schering bridge is used to measure____________ a) Inductance, Inductance b) Inductance, Capacitance c) Capacitance, Inductance d) Resistance, Capacitance Ans: Inductance, Capacitance 17. When sine wave is given as input to Schmitt trigger then its generates a) Sine wave b) Saw tooth wave c) Triangle wave d) Square wave Ans: Square wave 18. In Gauss Seidel method the following factors are influenced for operation a) Acceleration factor b) Selection of slack buss c) Both d) None Ans: Selection of slack buss* 19. i. (X’+Y’) A. Low-pass filter function ii. (X’Y’) B. Sum iii. (XY) C. NAND D. Carry E.NOR a) i-C, ii-E, iii-D b) i-C, ii-E, iii-B c) i-C, ii-B, iii-D d) i-C, ii-E, iii-A Ans: i-C, ii-E, iii-D 20. The phase lead compensation is used to a) Increase rise time and decrease overshoot b) Decrease both rise time and overshoot c) Increase both rise time and overshoot d) Decrease rise time and increase overshoot Ans: Decrease rise time and increase overshoot 21. Voltage feed back amplifier is a a) Shunt-Shunt b) Shunt-Series c) Series-Shunt d) Series- Series Ans: Shunt-Shunt 22. In microprocessor the next instruction to be executed is stored in a) Program Counter b) Stack Pointer c) Memory Pointer d) Accumulator Ans: Program Counter 23. The following element retains it energy after source is disconnected a) Resister b) Inductor c) Capacitor d) Thermistor Ans: 24. In series RLC circuit at resonant a) Voltage is in phase with current b) Current is maximum c) Inductive reactance = Capacitive reactance d) All of the above Ans: All of the above 25.For RC low pass filter R=100 K ohms, C= 5 micro farads then lower cutt of frequency is a) 1 K HZ b) 0 HZ c) 381.3 HZ d) Infinity Ans: 26. V=100Sin (1000t+46 deg), I=2Sin (1000t+80 deg) what are the elements in the circuit a) R=30 ohm, L=30 mH b) R=30 ohm, C=33.3 micro farads c) R=40 ohm, L=30 mH d) R=40 ohm, L=33.3 micro farads Ans: R=40 ohm, L=33.3 micro farads 27. L=10 mH, I=100Sin50t 0 a) b) c) d) Ans: 28. In dielectric measurement, the dielectric loss is proportional to a) F b) V c) I d) Vsqr Ans: Vsqr 29. G(s) = (1-s)/s(s+2) then closed loop transfer function is a) Unstable b) Stable c) Marginally stable d) All Ans: Stable 30. G(s) = (1+0.5s)/(1+s) find which type of net work it is a) Lead net work b) Lag net work c) Lag – Lead net work d) Lead – Lag net work Ans: Lag net work 31. Temperature of electrode in Arc furnace is a) 1000 deg b) 1500 deg c) 1500 deg to 3500 deg d) 4500 deg Ans: 32. In bode plot the point which separates the lower and upper frequencies is called a) Critical point b) Cut-off point c) d) Ans: 33. Nyquest stability is used to determine a) Absolute Stability b) Relative Stability c) Both d) None Ans: Both* 34. When 220V dc shunt alternator generating the voltage at rated value. If direction of rotation is reversed, then alternator will a) Build up its voltage with same polarity b) Build up its voltage with opposite polarity c) No build up of voltage d) None Ans: No build up of voltage 35. Over lap Angle depends on_________ a) Load inductance b) Loa capacitance c) Source inductance d) Source capacitance Ans: Source inductance 36. Area under speed time curve gives a) Time b) Speed c) Distance d) None Ans: Distance 37. The regulation of Short Transmission lines depends up on a) Distance of line b) Frequency c) Power factor d) All Ans: Power factor 38. Which of the following plant is having lowest load factor? a) Diesel Plant b) Pumped storage Plant c) Thermal Plant d) Nuclear Plant Ans: Diesel Plan 39. For SR latch whent the out put is undesirable a) 0, 0 b) 1, 0 c) 0, 1 d) 1, 1 Ans: 1, 1 40. For interrupting capacitive currents which Circuit Breaker (CB) is used a) SF6 CB b) Oil CB c) Vacuum CB d) Air blast CB Ans: Vacuum CB 41. For V/F control, when frequency is increased in transformer a) Core loss component current increases, Magnetizing component current decreases b) Core loss component current increases, Magnetizing component current increases c) Core loss component current decreases, Magnetizing component current decreases d) Core loss component current decreases, Magnetizing component current increases Ans: Core loss component current decreases, Magnetizing component current decreases 42. In ceiling fan the angle between auxiliary winding a main winding is a) 0 deg b) 90 deg c) 180 deg d) 360 deg Ans: 90 deg 43. In a shaded pole motor, shaded rings are used to a) Field flux production b) c) d) Ans: Field flux production 44. Practical method of improving string efficiency a) Increasing crass arms length b) Using different size of insulators c) Using different insulator materials d) Using of guard rings Ans: Increasing crass arms length* 45. In which type of fault all 3-phase components are equal a) L-G b) L-L c) L-L-G d) 3-Phase fault Ans: 3-Phase fault 46. 11/220 KV 100 MVA transformers, the primary base voltage rating is 10 KV then secondary base KV is a) 10 KV b) 220 KV c) 220/sqrt3 d) Ans: 220/sqrt3* 47. Water hamming effect is occurs in a) Surge tank b) Penstock c) Turbine d) Reservoir Ans: Penstock 48. Transient stability can be improved by a) By putting series capacitor b) By using dynamic resister c) Auto re-closers d) All of the above Ans: All of the above 49. If sending end voltage is Vs at no-load in a transmission line then receiving end voltage is if ABCD parameters of line is given a) Vs b) Vs/A c) 0 d) Infinity Ans: Vs/A 50. Harmonics are eliminated by using a) Skewing of rotor b) Distribution winding c) Short pitch winding d) All of the above Ans: All of the above 51. For parallel operation of transformer at no load, then load shared are equal when a) Impedance is proportional with respect to own KVA rating b) c) d) Ans: Impedance is proportional with respect to own KVA rating 52. In Induction motor Slip frequency of rotor current, when rotor speed is Nr. Then rotor producing slip field rotates with respect to stator is a) Slip frequency b) Nr c) Ns d) None Ans: Ns 53. Good regulation means a) Less fluctuations from no-load to full-load b) c) d) Ans: Less fluctuation from no-load to full-load 54. At dead short circuit at terminals of Alternator then the current I is a) ZPF Lag b) ZPF lead c) Unity power factor d) 0.8 Power factor lag Ans: ZPF Lag 55. Full scale Ammeter reading is 10 mA, Voltage across Ammeter is 100 mV. Then for 100 A measurements the power loss in the circuit is a) 1 W b) 10 W c) 100 W d) 1000 W Ans: 10 W* 56. When Alternator excitation increases and machine is operating at lagging power factor then a) I increase b) I decreases c) No effect on current d) None Ans: I increase 57. Flue gases coming out from furnace is first going through a) Turbine b) Economizer c) Air pre-heater d) Chimney Ans: Economizer 58. Two alternators rated are 200 KW at 4% regulation, 400 KW 5% regulation operating in parallel at 50HZ , when supply 600 KW the new frequency is a) 50 b) 49 c) 51.3 d) 47.7 Ans: 47.7 59. Va and Vb are negative sequence component voltages the difference angle between Va and Vb with respect to Va is a) 240 b) 120 c) 180 d) 360 Ans: 120 60. 4-Quadrent operation of chopper I is positive but V is may be positive are negative operates in which quadrant a) 1 and 2 b) 2 and 3 c) 1 and 3 d) 1 and 4 Ans: 1 and 4 61. Heat convection, radiation, and conduction all are takes place in a) Ice b) Boiler c) Refrigerator d) Flue gases in pipe Ans: 62. When moving iron meter is used to measure d.c current what is the disadvantage a) It calibration in rms value b) c) d) Ans: 63. When maximum power transfer to load is a) 20 W b) 50 W c) 100W d) 0W Ans: 0W 64. Find Zbus Parameters a) Z11=Z12=Z21= j0.1 ohm, Z22=j0.3 ohm b) c) d) Ans: Z11=Z12=Z21= j0.1 ohm, Z22=j0.3 ohm 65. Find Z11 and Z12 a) Z11=4 ohm, Z12= 2 ohm b) Z11=4 ohm, Z12= 5 ohm c) Z11=5 ohm, Z12= 2 ohm d) Z11=4 ohm, Z12= 3 ohm Ans: 66. Current in 5 ohm resister is a) 10 A b) -10 A c) 5 A d) -5 A Ans: -10 A 67. Find I in the circuit at t=0+ a) 2 A b) 5 A c) 7 A d) 10 A Ans: 8. Find voltage across inductor at t=0+ a) 0 V b) 2.5 V c) 5 V d) 10 V Ans: 5 V 69. This wave is applied to the PMMC meter, meter reads a) 0 V b) 3 V c) 2 V d) 1 V Ans: 1 V 70. Find Vab a) Zero b) 50 at an angle of 90 deg c) 50 at an angle of 90 deg d) None Ans: 71. Find E in the circuit a) 5 V b) 10 V c) 20 V d) None Ans: None 72. Vab is reference then angle between Vab and Ib is a) -15 deg b) 240 deg c) 180 deg d) -45 deg Ans: -15 deg* 63. When maximum power transfer to load is Click Here to Show Diagram a) 20 W b) 50 W c) 100W d) 0W Ans: 0W 64. Find Zbus Parameters Click Here to Show Diagram a) Z11=Z12=Z21= j0.1 ohm, Z22=j0.3 ohm b) c) d) Ans: Z11=Z12=Z21= j0.1 ohm, Z22=j0.3 ohm 65. Find Z11 and Z12 Click Here to Show Diagram a) Z11=4 ohm, Z12= 2 ohm b) Z11=4 ohm, Z12= 5 ohm c) Z11=5 ohm, Z12= 2 ohm d) Z11=4 ohm, Z12= 3 ohm Ans: 66. Current in 5 ohm resister is Click Here to Show Diagram a) 10 A b) -10 A c) 5 A d) -5 A Ans: -10 A 67. Find I in the circuit at t=0+ Click Here to Show Diagram a) 2 A b) 5 A c) 7 A d) 10 A Ans: 2 A 68. Find voltage across inductor at t=0+ Click Here to Show Diagram a) 0 V b) 2.5 V c) 5 V d) 10 V Ans: 5 V 69. This wave is applied to the PMMC meter, meter reads Click Here to Show Diagram a) 0 V b) 3 V c) 2 V d) 1 V Ans: 1 V 70. Find Vab Click Here to Show Diagram a) Zero b) 50 at an angle of 90 deg c) 50 at an angle of 90 deg d) None |
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