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PSC Previous Question-Skilled assistant grade II-6/2015
#1. A semiconductor without any impuritiy is known as....?
Intrinsic semi conductor
Extrinsic semi conductor
#2. A transformer which increase the voltage level is known as....?
Step up transformer
Step down transformer
#3. In single phase energy meter .... type damping is used:
#4. DOL starter do not reduce......?
#5. ln 3 phase supply system motors "single phasing" means:
#6. For holding object , cutting and twisting wires which tool is used:
none of the above
#7. A battery is a combination of...?
#8. In earthihg which of the following is used as earth lectrodes:
#9. A device which converts electrical energy into mechanical energy is termed as :
#10. In two wattmeter method of power measurement phase angle is above 60, then total power is:
#11. An instrument which is used to test the insulation resistance is:
#12. Positive electrode in a volta cell is :
#13. Which of the following is used as a filament in metal filament lamp:
#14. In a electric mixer ..... type motor is used:
#15. ACSR conductor is used in....:
over head system
under ground system
#16. ln a single phase system of distribution service connection is made by .....w ire:
weather proof wire
#17. Transformer oil is a type of....:
#18. Cleat wiring is used for:
#19. Semiconductor have .... type of temperature coefficient of resistance:
none of these
#20. Power factor is the ratio of resistance and....:
#21. In an electric heater, heating coil is generally made upon...?
#22. Electricity is a form of..
#23. MCB means....?
Main circuit breaker
Miniature circuit breaker
Metal circuit breaker
Major circuit breaker
#24. A transistor has.....PN junction?
#25. .......type single phase motor cannot change its direction of rotation?
shaded pole motor
#26. SMPS Means..
simple mechanical power supply
sinusoidal mode power supply
switched mode power supply
simple main power supply
#27. The pressure plate of an ordinary electric iron made by...?
#28. Sodium vapour lamp is best suited for...?
drawing room lightining
#29. Electrically charged atom is generally termed as...?
#30. According to indian electricity rule, total earth resistance should be less than....?
5 mega ohm
50 mega ohm
500 mega ohm
#31. Carbon arc lamp were generally used in....?
#32. Conductors have.......specific resistance?
#33. For plate earthing, the size of copper plate is....?
60 cm x 60 cm x 3 mm
60 cm x 60 cm x 3.15 mm
60 cm x 60 cm x 6.3 mm
50 cm x 50 cm x 3.15 mm
#34. A commutator is a device used in DC generators to convert...?
AC to DC
DC to AC
Single phase to three phase
Three phase to single phase
#35. Breather of a distribution transformer contains..?
#36. Open circuit test conducted in a transformer to find out.....?
#37. Flemmings right hand rule used to find out....?
direction of force
direction of flux
direction of emf
direction of torque
#38. To reduce hysteresis loss the core of a DC machines is generally made of....?
#39. Wire gauge is used to measure....of a conductor?
#40. To change DOR of a 3phase motor...?
to change sequence of any two phase
to change phase and neutral
to change positive and negative terminals
to change windings
#41. Negative electrode of dry cell is made up of....?
#42. In three phase power supply system, earth wire is inducted by...?
#43. A two coil heater gives its maximum heat output,when the coils are in....?
#44. In a single phase system of supply, which of the following is used to test the supply correctly?
#45. Transformers and alternators are generally rated in...?
#46. In a domestic refrigerator, heat inside is taken out through....?
#47. Germanium and silicon are generally used as....:
#48. In alternators supply is taken out through...?
#49. Which of these is the strongest diamagnet material?
#50. In a single phase motor, centrifugal switch is used to disconnect....?
none of these
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