Power Grid Exam Electrical Branch Previous Papers

Please provide me question paper for Power Grid Examination for Electrical Branch as soon as possible ??

Here I am giving you question paper for Power Grid Examination for Electrical Branch

1 An ice block submerged in the water, if the ice melts level of water (increase,decrease,remains same,none)

2 Simply supported beam with w point load at the middle, max. bending moment?(wl/4)

3 Simply supported beam with UDL ,max.deflection (wl4/384EI)

4 Cantilevel beam point load at tip,max.bending momemt comes at (end)

5 When bearing life L10 represents (bearings 10%survive,bearings 10% fails, none )

6 For welding high carbon steels which type of flame is used (oxidizing,carburizing,neutral,none)

7. Arrange the following cutting tools in decreasing order of machining hardness…Ceramics

8. When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=?
L1/L2={P2/P1}10/3

9.Product simplification does not mean??
Product characterization

10 Which of the following process has the most scope in manufacturing?
CAD/CAM, CAM, CIM, All the above.

11. Concurrent engineering means?
(Manufacturing, designing, both,none)

12. Which manufacturing process yields higher output and increases worker productivity-
(process layout,line+process,functional layout)

13. 18-4-1 represents-, Tungsten-Cr-Vn

14 For which material is negative allowance provided-(Graphite,steel,bronze,cast iron)

15. What is the recrystallisation temperature of tin- (60,300,1000,none)

16. What is the purpose of borax in soldering-

17. Top gates are provided in which type of casting-(Shallow casting,simple,complex,none)
18. Which statement is true regarding simple gear trains-(i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving)

19. What is the purpose of normalizing- (Refining of grain structure)

20. As the grain size is decreased-(Hardness increases,corrosion resistance decreases,both)

21. Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure ??(linearly increases linearly decreases exponentially increase )

22. A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel?
(bottom,neck,uniformly spread)

23. A empty bottle(in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is _? (T,T/K,TK)

24. Bearing somerfield number _ with load on bearing?
(increases,decreases,no change)

25. Critical radius for a sphere is-(2k/h)

26. Critical radius exist for_ (spherical,cylindrical,both,slab)

27. Convectional resistance/internal resistance is called (biot number)

28. Nusselt no. is? (hl/k)

29. EOQ=?

30 Which statement is true regarding critical path method? (i only one critical path exists for a network, more than one with same duration,)

31. Shipment cost,inspection cost,storage cost comes under_ (carrying cost ,holding cost,)

32. Ischronous governers sensitivity is- (zero,infinite)

33. self energized brakes are-(friction moment acts in the direction of application of force,opposite to the direction of force, does not need a force to act ,)

34 The ratio of heat capacities for evaporator and condenser is_ (Zero,infinity)

35. when steam and air mixture with partial pressure 0.06 and 0.07 enters a condenser what is the condenser pressure? (0.06,0.07,0.53,0.03)

36. In pulverized burning of coal heat transfer from boiler to water occurs through_( predominant radiation, convection, conduction, conduction+convection)

37. Rankine cycle efficiency for same parameters increases mostly with_(reheat, regeneration, super heating )

38. Ericson cycle with all reversible processes assume_(carnot cycle,stirling,brayton

39. Air delivery tank at outlet of reciprocating compressor is provided for_ (provide constant pressure, avoid cavitation, )

40. High speed centrifugal pump has _?
(vanes faces in forward direction side,backward,radial vanes)

41. Thermal efficiency in decreasing order_?
(Otto cycle>dual cycle>diesel cycle)

42. When a 1000 K body comes in contact with atmosphere at 300K a loss of 9000 KJ heat is transferred. The net available energy transferred is_
43. When entropy of a system increases_?
(unavailable energy increases )

44. Rolling is a process widely used for_?

(I section,tubes)

45. Tool nomenclature_?

46. In francis turbine movement of steam?

47. For low power consumption _?
(rake angle should be increased / decreased, nose angle increased/ decreased)

47. Continuous chips occur in_?
(High speeds,low speeds,both,none)

48. Primary forces in a reciprocating engine_?
(fully balanced, partially balanced, completely unbalanced, none)

49. In proximate analysis pyrogallol is used for analysis of which element_?
(nitrogen,oxygen)

50. Sulphur content in fuel greatly affects_?
(corrosion)

51. Heat transfer through radiation can be increased by_?

(decreasing emissivity and increases temperature of hot body)

52. which theory of failure clearly explains the failure in case of ductile material?
(Maximun shear stress theory or Guests or trescas theory)

53. When a material is subjected to continuous cycles which limit is being verified?
(Endurance limit)

54. where is stress concentration maximum?
(notches, stress reducing throughcuts)

55. Power transmitted through a belt drive_?
P(T2-T1)

56. According to Eulers theory crippling or buckling load is
(Wcr = Cπ2EI/l2)

57. During sensible heating, specific humidity_?
(remains constant)

58. COP of a refrigerator is _?
(greater than 1 )

59. The maximum temperature in a refrigeration cycle is_?
(less than/greater than/equal to critical temperature)
60. The pressure at the throat of the nozzle_?
(maximum,min)

61. for a statically determinate set of forces for equilibrium_?
(∑ f(X),f(Y),f(Z)=0,∑M=0)

62. For a statically determinate set of forces-
(there r as many equations as the no. of unknowns)
63. 1-2-3 analysis is used for_?
(1.break even analysis, ??)

64. A problem on mean time of service something like a salesman has a rating of 120. considering 10% allowance time calculate the time required to serve 120???

65. A problem n determining time in a queue??

66. Energy equation for a laminar flow is _?
(Uniform and steady ,non uniform and unsteady)
67. Undercuts in welding occurs due to_?
(low welding current,high welding current)

68. Work holding equipment in shearing??

69. At the centre of a nozzle _?
(Mach no=1;=1)

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

You need PGCIL Power Grid Electrical Question Paper, I am giving here:

1 An ice block submerged in the water, if the ice melts level of water (increase,decrease,remains same,none)

2 Simply supported beam with w point load at the middle, max. bending moment?(wl/4)

3 Simply supported beam with UDL ,max.deflection (wl4/384EI)

4 Cantilevel beam point load at tip,max.bending momemt comes at (end)

5 When bearing life L10 represents (bearings 10%survive,bearings 10% fails, none )

6 For welding high carbon steels which type of flame is used (oxidizing,carburizing,neutral,none)

7. Arrange the following cutting tools in decreasing order of machining hardness…Ceramics

8. When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=?
L1/L2={P2/P1}10/3

9.Product simplification does not mean??
Product characterization

10 Which of the following process has the most scope in manufacturing?
CAD/CAM, CAM, CIM, All the above.

11. Concurrent engineering means?
(Manufacturing, designing, both,none)

12. Which manufacturing process yields higher output and increases worker productivity-
(process layout,line+process,functional layout)

13. 18-4-1 represents-, Tungsten-Cr-Vn

14 For which material is negative allowance provided-(Graphite,steel,bronze,cast iron)

15. What is the recrystallisation temperature of tin- (60,300,1000,none)

16. What is the purpose of borax in soldering-

17. Top gates are provided in which type of casting-(Shallow casting,simple,complex,none)
18. Which statement is true regarding simple gear trains-(i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving)

19. What is the purpose of normalizing- (Refining of grain structure)

20. As the grain size is decreased-(Hardness increases,corrosion resistance decreases,both)

21. Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure ??(linearly increases linearly decreases exponentially increase )

22. A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel?
(bottom,neck,uniformly spread)

23. A empty bottle(in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is _? (T,T/K,TK)

24. Bearing somerfield number _ with load on bearing?
(increases,decreases,no change)

25. Critical radius for a sphere is-(2k/h)

26. Critical radius exist for_ (spherical,cylindrical,both,slab)

27. Convectional resistance/internal resistance is called (biot number)

28. Nusselt no. is? (hl/k)

29. EOQ=?

30 Which statement is true regarding critical path method? (i only one critical path exists for a network, more than one with same duration,)

31. Shipment cost,inspection cost,storage cost comes under_ (carrying cost ,holding cost,)

32. Ischronous governers sensitivity is- (zero,infinite)

33. self energized brakes are-(friction moment acts in the direction of application of force,opposite to the direction of force, does not need a force to act ,)

34 The ratio of heat capacities for evaporator and condenser is_ (Zero,infinity)

35. when steam and air mixture with partial pressure 0.06 and 0.07 enters a condenser what is the condenser pressure? (0.06,0.07,0.53,0.03)

36. In pulverized burning of coal heat transfer from boiler to water occurs through_( predominant radiation, convection, conduction, conduction+convection)

37. Rankine cycle efficiency for same parameters increases mostly with_(reheat, regeneration, super heating )

38. Ericson cycle with all reversible processes assume_(carnot cycle,stirling,brayton

39. Air delivery tank at outlet of reciprocating compressor is provided for_ (provide constant pressure, avoid cavitation, )

40. High speed centrifugal pump has _?
(vanes faces in forward direction side,backward,radial vanes)

41. Thermal efficiency in decreasing order_?
(Otto cycle>dual cycle>diesel cycle)

42. When a 1000 K body comes in contact with atmosphere at 300K a loss of 9000 KJ heat is transferred. The net available energy transferred is_
43. When entropy of a system increases_?
(unavailable energy increases )

44. Rolling is a process widely used for_?

(I section,tubes)

45. Tool nomenclature_?

46. In francis turbine movement of steam?

47. For low power consumption _?
(rake angle should be increased / decreased, nose angle increased/ decreased)

47. Continuous chips occur in_?
(High speeds,low speeds,both,none)

48. Primary forces in a reciprocating engine_?
(fully balanced, partially balanced, completely unbalanced, none)

49. In proximate analysis pyrogallol is used for analysis of which element_?
(nitrogen,oxygen)

50. Sulphur content in fuel greatly affects_?
(corrosion)

51. Heat transfer through radiation can be increased by_?

(decreasing emissivity and increases temperature of hot body)

52. which theory of failure clearly explains the failure in case of ductile material?
(Maximun shear stress theory or Guests or trescas theory)

53. When a material is subjected to continuous cycles which limit is being verified?
(Endurance limit)

54. where is stress concentration maximum?
(notches, stress reducing throughcuts)

55. Power transmitted through a belt drive_?
P(T2-T1)

56. According to Eulers theory crippling or buckling load is
(Wcr = Cπ2EI/l2)

57. During sensible heating, specific humidity_?
(remains constant)

58. COP of a refrigerator is _?
(greater than 1 )

59. The maximum temperature in a refrigeration cycle is_?
(less than/greater than/equal to critical temperature)
60. The pressure at the throat of the nozzle_?
(maximum,min)

61. for a statically determinate set of forces for equilibrium_?
(∑ f(X),f(Y),f(Z)=0,∑M=0)

62. For a statically determinate set of forces-
(there r as many equations as the no. of unknowns)
63. 1-2-3 analysis is used for_?
(1.break even analysis, ??)

64. A problem on mean time of service something like a salesman has a rating of 120. considering 10% allowance time calculate the time required to serve 120???

65. A problem n determining time in a queue??

66. Energy equation for a laminar flow is _?
(Uniform and steady ,non uniform and unsteady)
67. Undercuts in welding occurs due to_?
(low welding current,high welding current)

68. Work holding equipment in shearing??

69. At the centre of a nozzle _?
(Mach no=1;=1)

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Answered By StudyChaCha Member