#1
13th August 2014, 02:04 PM
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Paper for SAIL MT Technical exam
Will you please provide me quesiton paper for Sail Management Trainee (MT) technical examinatin in a PDF file format ?
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#2
14th August 2014, 03:14 PM
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Re: Paper for SAIL MT Technical exam
Here I am giving you quesiton paper for Sail Management Trainee (MT) technical examinatin. 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 NUMERICAL APTITUDE QUESTIONS 1 (95.6x 910.3) ÷ 92.56256 = 9? (A) 13.14 (B) 12.96 (C) 12.43 (D) 13.34 (E) None of these 2. (4 86%of 6500) ÷ 36 =? (A) 867.8 (B) 792.31 (C) 877.5 (D) 799.83 (E) None of these 3. (12.11)2 + (?)2 = 732.2921 (A)20.2 (B) 24.2 (C)23.1 (D) 19.2 (E) None of these 4.576÷ ? x114=8208 (A)8 (B)7 (C)6 (D)9 (E) None of these 5. (1024—263—233)÷(986—764— 156) =? (A)9 (B)6 (C)7 (D)8 (E) None of these 6. ?125÷5x ?=6265 (A)1253 (B) 1250 (C)1245 (D) 1550 (E) None of these 7.(42)2÷6.3 x 26 =? (A)7182 (B) 7269 (C)7260 (D) 7240 (E) None of these 8.384×12×2=? (A)9024 (B) 9216 (C)6676 (D) 6814 (E) None of these 9.6534÷40÷33=? (A)3.06 (B) 5.25 (C)4.82 (D) 6.12 (E) None of these 10. ?2704 x ?2209=? (A)1996 (B)2444 (C)2452 (D)1983 (E)None of these 11.2536+4851—?=3450+313 (A)3961 (B)4532 (C)3624 (D)4058 (E) None of these 12. (2560 x 1.4) +(7400 x 0.6) =? (A)7512 (B) 9746 (C)6523 (D) 8024 (E) None of these 13. 36%of 850+? %of 592 = 750 (A)73 (B)89 (C)82 (D)75 (E) None of these 14.64%of 2650+40% 0f 320=? (A)1824 (B) 1902 (C)1829 (D) 1964 (E) None of these 15. 486+32×25—59=? (A) 514 (B) 528 (C) 599 (D) 507 (E) None of these 16. 1827÷ 36 x ?=162.4 (A)4.4 (B)3.2 (C)2.1 (D) 3.7 (E) None of these 17. 1008÷36=? (A)28 (B) 32.5 (C)36 (D) 22.2 (E) None of these 18. 56.21 +2.36+5.41 —21.4+1.5=? (A)40.04 (B) 46.18 (C)44.08 (D) 43.12 (E) None of these 19. 65%of 320+?=686 (A) 480 (B) 452 (C)461 (D) 475 (E) None of these 20. 83250÷?=74×25 (A)50 (B) 45 (C)40 (D) 55 (E) None of these 21. ?7744=? (A)88 (B)62 (C)58 (D)78 (E)None of these 22.35%of ?=242 (A)729 (B)652 (C)693 (D)759 (E) None of these 23. 1256+4813+765=? (A)5642 (B) 5876 (C)6788 (D) 6878 (E) None of these 24. 22 x4+(?)2=(13)2 (A) 81 (C) 27 (B) 9 (D) 64 (E) None of these 25. 432+2170+35=? (A)494 (B) 475 (C)481 (D) 469 (E) None of these 26. Three numbers are in the ratio of 3: 4 :5 respectively. If the sum of the first and third numbers is more than the second number by 52, then which will be the largest number? (A) 65 (B) 52 (C) 79 (D) 63 (E) None of these 27. The compound interest on a certain amount for 2 years at the rate of 8 p.c.p.a. is Rs.312. What will be the simple interest on the same amount and at the same rate and same time? (A)Rs. 349.92 (B) Rs. 300 (C)Rs. 358.92 (D) Rs. 400 (E) None of these 28. The length of a rectangle exceeds its breadth by 7 ems. If the length is decreased by 4 cm. and the breadth is increased by 3 cms., then the area of the new rectangle will be the same as the area of the original rectangle. What will be the perimeter of the original rectangle? (A)45 cms. (B)40 cems. (C)50 cms. (D)55 cms. (E)None of these 29. The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number? (A)28 (B) 48 (C)39 (D) 93 (E) None of these 30. In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction ? (A)5/18 (B)6/13 (C)13/6 (D)7/12 (E) None of these 31. Four-fifth of a number is 10 more than two-third of the same number. What is the number? (A) 70 (B) 75 (C) 69 (D) 85 (E) None of these 32. A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be the percentage profit? (A) 25 (B) 15 (C) 13 (D) 17 (E) None of these 33. What should come in the place of question mark (?) in the number series given below? 25, 34, 52,79, 115,? (A)160 (B) 140 (C)153 (D) 190 (E)None of these 34. What number should replace both the question marks (?) in the following question ? ?/144= 49 /? (A)95 (B) 76 (C)82 (D) 84 (E)None of these 35. The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers? (A)158 (B) 148 (C)168 (D) 198 (E) None of these 36. Ajay spends 25% of his salary on house rent, 5% on food, 15% on travel, 10% on clothes and the remaining amount of Rs. 27,000 is saved. What is Ajay’s income? (A) Rs. 60,000 (B) Rs. 80,500 (C) Rs. 60,700 (D) Rs. 70,500 (E) None of these 37. In how many different ways, can the letters of the word ‘CRISIS’ be arranged ? (A) 150 (B) 240 (C) 120 (D) 200 (E) None of these 38. At each corner of a square park with side equal to 40 m, there is a flower bed in the form of a sector of radius 14 m. What is the area of the remaining part of the park? (A)984 Square m (B) 789 Square m (C) 1014 Square m (D) 1024 Square m (E) None of these 39. The length of a rectangular field is thrice its breadth. If the cost of cultivating the field at Rs. 367.20 per square meter is Rs. 27,540, then what is the perimeter of the rectangle? (A)47m (B) 39m (C)52m (D)40m (E) None of these 40. If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? (A)4/5 (B)5/4 (C)9/5 (D)8/5 (E) 7/2 41. The present ages of Chetna and Shikha are in the ratio of 5 :7 respectively. After 7 years, their ages will be in the ratio of 11:14 respectively. What is the difference between their ages? (A)9 years (B) 4 years (C)5 years (D) 7 years (E) None of these 42. If 13 men can complete a piece of work in 36 days, then in how many days will 18 men complete the same work? (A)16 days (B) 20 days (C)26 days (D) 30 days (E) None of these 43. If the area of a circle is 75.44 square cm then what is the circumference of the circle? (A)29.2 cm (B) 28.9 cm (C)30.8 cm (D) 40.2 cm (E) None of these 44. Girish started a business investing Rs. 45,000. After 3 months, Vijay joined him with a capital of Rs. 60,000. After another 6 months, Ankush joined them with a capital of Rs. 90,000. At the end of the year, they made a profit of Rs. 16,500. What is Girish’s share of profit ? (A) Rs. 5,500 (B) Rs. 6,000 (C) Rs. 6,600 (D) As. 5,900 (E) None of these 45. What is the average age of a family of five members, whose ages are 42, 49, 56, 63 and 35 years respectively? (A)60 years (B) 49 years (C)45 years (D) 58 years (E) None of these 46. A and B are two taps which can fill a tank individually in 10 minutes and 20 minutes respectively. However, there is a leakage at the bottom which can empty a filled tank in 40 minutes. If the tank is empty initially, how much time will both the taps take to fill the tank (leakage is still there) ? (A) 8 minutes (B) 7 minutes (C) 10 minutes (D)15 minutes (E) None of these 47. What is 50% of 40% of Rs. 3,450? (A) Rs. 690 (B) As. 520 (C) Rs. 517.5 (D) Rs. 499.2 (E) None of these 48. If an amount of Rs. 5,86,700 is distributed equally amongst 25 persons, then how much would each person get? (A) Rs. 2,54,876 (B) Rs. 2,34,68 (C) Rs. 3,74,20 (D) Rs. 1,95,62 (E) None of these 49. An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white? (A) 71/190 (B) 121/190 (C) 91/190 (D) 93/190 (E) None of these 50. If the price of 5 transistors and 2 pen stands is Rs. 810, then what will be the price of 7 transistors and 9 pen stands? (A) Rs. 1,320 (B) Rs. 1,500 (C) Rs.1,150 (D) Cannot be determined (E) None of these ANSWERS: 1 - D 2 - C 3 - B 4 - A 5 - D 6 - A 7 - E 8 - B 9 - E 10 - B 11 - C 12 - D 13 - D 14 - A 15 - B 16 - B 17 - A 18 - C 19 - E 20 - B 21 - A 22 - C 23 - E 24 - B 25 - A 26 - A 27 - B 28 - C 29 - C 30 - D 31 - B 32 - D 33 - A 34 - D 35 - C 36 - A 37 - E 38 - A 39 - D 40 - B 41 - E 42 - C 43 - C 44 - A 45 - B 46 - A 47 - A 48 - B 49 - E 50 - D |
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