#1
6th August 2014, 08:18 AM
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SAIL Management Trainee Electrical Engineering Model Paper
Will you please provide the question paper of SAIL Management Trainee Electrical Engineering Model Paper? |
#2
6th August 2014, 08:22 AM
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Re: SAIL Management Trainee Electrical Engineering Model Paper
Here I am providing the list of few questions of SAIL Management Trainee Electrical Engineering Model Paper which you are looking for . Q.1.Two 100-W, 200-V lamps are connected in series across a 200-V supply. The total power consumed by each lamp will be _____ watts. 200 100 50 25 Q.2.The material used for fuse must have low melting point and low specific resistance high melting point and low specific resistance low melting point and high specific resistance none of these Q.3.The purpose of introducing reactor in the ignition circuit of mercury are rectifier is to limit the voltage of the circuit rate of change of flux in the circuit current in the circuit rate of change of current in the circuit Q.4.Sparking occurs when a load is switched off because the circuit has high a resistance inductance capacitance none of these Q.5.The usual value of the surge impedance of a telephone line is ______ohm. 75 600 500 250 Q.6.In the case of a lossy capacitor, series equivalent resistance value will be small large very small none of these Q.7.Time constant of an R-C circuit increases if the value of resistance is decreased increased neither (a) nor (b) either (a) or (b) Q.8.Sparking between contacts can be reduced by inserting a capacitor in parallel with contacts resistance in the line capacitor in series with contacts none of these Q.9.dBm is a ratio of power unit of power unit of voltage none of these Q.10.Decibel is a unit of frequency impedance power ratio none of these Q.11.The absolute unit of resistance is of the dimension of velocity length acceleration none of these Q.12.The absolute unit of inductance is of the dimension of time length mass none of these Q.13.The applied voltage from the circuit being checked is disconnected when an ohmmeter is used because the current will decrease the resistance the ohmmeter has its own battery no current is needed for meter movements none of these Q.14.An accurate voltmeter must have an internal impedance of very high value very low value low value none of these Q.15.A moving –coil instrument can be used to measure high frequency a.c. low frequency a.c both d.c. and a.c direct current Q.16.The voltage drop across the moving coil of a 50-µ A (f.s) PMMC meter at full- scale deflection is ---- the voltage drop across that of a 1-mA (fs) PMMC meter at full-scale deflection. less than approximately equal to greater than none of these Q.17.Voltage stress is maximum in a cable at the surface of the insulator sheath conductor none of these Q.18.The coefficient of coupling between two air core coils depends on mutual inductance and self inductances of the two coils mutual inductance between two coils only self inductances of the two coils only none of these Q.19.The location of lightning arrestor is away from the transformer near the transformer near the circuit breaker none of these Q.20.A conductor of length 1 meter moves at rt. angles to a magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced e.m.f. in the conductor will be ----- volt. 75 25 50 100 Q.21.In electrical machines, laminated cores are used with a view to reducing eddy current loss hysteresis loss Q.22.A battery always delivers power always absorbs power absorbs power when the internal resistance is non-zero but delivers power when the internal resistance is zero can absorb or deliver power depending upon the circuit to which it is connected Q.23.Decibel is a unit of voltage unit of power ratio of power none of these Q.24.Deflection of pointer of a permanent-magnet moving-coil meter for fixed current is _______ flux density in the airgap between magnetic pole shoes and coil. independent of directly proportional to inversely proportional to none of these Q.25.A moving-iron meter is useful for voltage measurement at _______frequencies. high low very high none of these Q.26.A thermocouple instruments would be used to measure alternating current only? low very low high none of these Q.27.Which of the following instruments will be used to measure alternating current only? moving – iron (attraction-types) ammeter moving – iron voltmeter permanent-magnet type ammeter induction-type ammeter Q.28.A milliammeter can be used only as an ammeter as a voltmeter both as voltmeter and ammeter none of these Q.29.To measure the e.m.f. of a Weston standard cell, one would use a/an electrostatic voltmeter hot-wire voltmeter galvanometer potentiometer–Answer Q.30.Deflection sensitivity of deflecting plates of cathode ray tube ____ the distance between deflection pates. is inversely proportional to is directly proportional to does not depend on none of these Q.31.Deflection sensitivity of deflecting plates of a cathode ray tube ___the accelerating anode (A3) voltage. is inversely proportional to is directly proportional to does not depend on none of these Q.32.A moving – coil instrument can be used to measure direct current alternating current both direct current and alternating current none of these Q.33.The frequency stability of a crystal oscillator depends upon tuned circuit crystal crystal as well as the tuned circuit none of these Q.34.Hay bridge is usually used for measuring resistance capacitance inductance none of these Q.35.Schering bridge is used for measuring capacitance inductance frequency none of these Q.36.The Wien’s bridge is particularly useful for measuring frequencies of _______value. low very high high very low Q.37.Impedance relay is used to protect line within a particular zone line beyond a particular zone the whole transmission system none of these Q.38.Buchholz relay is used in ______ protection. line generator transformer none of these Q.39.Kirchhoff’s voltage law is not valid for a non-linear network. True False Q.40.If a piece of metal wire is stretched, its resistance will increase. True False Q.41.In mesh analysis of a network, all the mesh currents must necessarily be either clock-wise or anticlock-wise. True False Q.42.An uncharged capacitor is connected across a charged one.There will flow an impulsive current through the circuit. True False Q.43.If R, L and C denote resistance, inductance and capacitance respectively, the quantity RC has the same dimensions as that of R/L. True False Q.44.If R, L and C denote resistance, inductance and capacitance respectively, then the quantity CR2 has the dimensions, of L. True False Q.45.A battery will not cause any current to flow, when it is connected across a pure capacitor, in the steady state even if the capacitor value varies with time. True False Q.46.When two capacitors C1 and C2 are connected in series, the effective capacitance is C1+C2 True False Q.47.The flux linked with a coil of inductance l carrying a current i is ddt(Li). True False Q.48.When one wants to connect two batteries in parallel to draw larger current than what can be supplied by one battery, it suffices to ensure that their e.m.f.s. are equal. True False Q.49.An ideal battery can supply infinite current True False Q.50.1 GHz means 100 Hz. True False. |
#3
26th May 2015, 04:46 PM
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Re: SAIL Management Trainee Electrical Engineering Model Paper
Hey, while doing preparation of the SAIL Management Trainee Exam I requires sample paper of the exam will you provide me sample paper of the SAIL Management Trainee Electrical Engineering Exam ?
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#4
26th May 2015, 04:47 PM
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Re: SAIL Management Trainee Electrical Engineering Model Paper
As you want I am here providing you sample paper of the SAIL Management Trainee Electrical Engineering. SAIL Management Trainee Electrical Engineering paper 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 b) 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 Ans: 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 Ans: 71. Find E in the circuit Click Here to Show Diagram a) 5 V b) 10 V c) 20 V d) None Ans: None 72. Vab is reference then angle between Vab and Ib is Click Here to Show Diagram a) -15 deg b) 240 deg c) 180 deg d) -45 deg Ans: -15 deg* |
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