#1
31st July 2014, 10:39 AM
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Power grid exam model question papers
Hello buddy I am looking for Power grid exam model question papers, can you provide me here?
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#2
31st July 2014, 12:29 PM
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Re: Power grid exam model question papers
Yeah as you are looking for Power grid exam model question papers, so here I am providing same: 1. resistance of ideal transformer winding ans. zero 2. hysteresis loss in transformer depends on frequency as ans. square of frequency 3. in no load test of transformer input power is equal to ans. iron loss or constant losses 4. zero voltage regulation occurs in which power factor condition ans. leading power factor condition 5. load sharing in parallel operation of transformer ans. impedance is inversely proportional to KVA rating of transformer 6. relation between starting torque of slip ring induction motor and squirrel cage induction motor ans. starting torque of slip ring induction motor is more than starting torque of squirrel cage induction motor 7. relation between rotor power input, slip and rotor copper loss in induction motor ans. rotor copper loss is equal to slip time the rotor input power 8. relation between starting torque when induction motor start with the help of star delta starter and auto transformer ans. in star delta transformer starting starting torque is 1/3 times the full load torque with some other factor 9. due to feedback which factor increases ans. stability of the system 10. in second order system damping factor 11. numerical on peak overshoot 12.numerical on steady state error 13. numerical on transfer function of system 14. numerical on stability of system 15. problem on root locus 16. effect of integral controller on system stability ans. for closed loop system by integral controller steady state stability increases 17. to gate high starting torque starting method of induction motor ans. external resistance starting method 18. to gate low starting power factor in starting of induction motor ans. external reactance starting method 19. relation between power transferred by 1phase line and 2 circuit line 20.bundled conductors are used to ans. reduce corona loss 21. relation between corona loss with frequency and diameter of conductor ans. corona loss directly proportional to frequency and inversely proportional to diameter of conductor 22. series capacitor used in power system to ans. series capacitor for stability of power system 23. insulation level is decided by ans. switching over voltage 24. effect of using bundled conductor on inductance of conductor ans. decreases 25. insulator type used when there is dead end or change in direction of conductor ans. strain type 26. resistance switching used in which circuit breaker ans. air blast circuit breaker 27. relation between resistance , inductance and capacitance in resistance switching 28. where are the lightning arrestars are located ans. near the transformer 29. which type of relay are used in overloading ans. thermal relay 30. whenever difference in current which relay is used ans. differential relay 31. which distance relay is directional ans. mho relay 32. damper winding are used in alternator for ans. prevent hunting and provide high starting torque 33.effect of armature reaction ans. both cross magnetising and demagnetising 34.question from inverted v curve of synchronous motor curve 35.numerical from source transformation technique 36. numerical related to find rms value of triangular wave 37. in series RLC circuit if frequency greater than resonent frequency than impedence offered by circuit ans. inductive 38.numerical from dc switching of inductor , capacitor and resistance in a network 39. eddy current damping used in which type of instrument ans. pmmc 40. fluid friction damping used in which type instrument ans. horizontal MI 41. numerical from two wattmeter method 42. numerical from over ranging of digital instrument 43.two or three question from CRO 44.relation between latching current and holding current ans. latching current> holding current 45. di/dt protection of thyrestor ans . using inductor in series 46. difference between BJT and MOSFET ans. in BJT sec. breakdown 47. terminal of IGBT 48. terminals of MOSFET 49. for proper commutation relation between circuit turn off time and thyristor turn off time ans. circuit turn off time must be greater than thyristor turn off time 50. specific of earthing transformer ans. no secondary 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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