Are you preparing for NEA, NTC, PSC, CANN for level 3, leve 4, level 5 and level 7. If yes? you are in right place.

This is a sample question paper which is just test your knowledge in Mr. Electro which is very useful for jobs.

## Loksewa aayog tayari model question

Multiple Choice Question

Each question has equal 1 mark.

1. Electro-mechanical voltage regulators are generally used in

reactors

generators

transformers

all of the above

2. In a outdoor substation, a lightening arresters is placed near to

the isolator

the current transformer

the power transformer

the current breaker

3. The stability of a system is not affected because of

reactance of line

losses

reactance of generator

output torque.

4. A 10 pole generator rotates at 1200 rpm. The frequency of generated AC voltage will be

120

110

100

50

5. The no of electrical degrees pass through in one revolution of 6 pole synchronous alternator is

360

720

1080

2160

6. Flemin's left hand rule may be applied to the generator to find the

direction of rotor rotation

polarity of induced emf

direction of induced emf

direction magnetic field

7. Two voltmeters have the same range 0-400V and their internal impedance are 30,000 ohms and 20,000 ohms. If both of them are connected in series and the supply of 600V be applied across them, the readings are

360V and 240V

300V each

400V and 200V

one of the meter out of the range and other 100V

8. The full-scale deflection current of the ammeter is 1 mA and internal resistance is 100 ohms. If the meter have full deflection at 5A, what is the value of the series resistor to be used?

49.99 ohms

1/49.99 ohms

1 ohm

2 ohms

9. The full-scale deflection current of the ammeter is 1 mA and internal resistance is 100 ohms. This have full deflection when 100V is measured. So what is the value of the series resistor to be used?

99.99 kilo ohms

100 kilo ohms

99.99 ohms

100 ohms

10. What is the capacity of the oldest plant of Nepal which is Pharping Hydroelectric Project?

600 KW

640 KW

500 KW

1000 KW

11. What is the total capacity of thermal powers in Nepalese power system?

63.5 MW

53.4LMW

100 MW

None

12. A diesel power plant is thet suited for

base load plant

stand-by plant

peak load plant

none

13. Cells are connected in series to increase

current capacity

life of cells

voltage ratings

terminal voltage

14. In a fluorescent tube circuit, the choke acts as a

starter

power factor improving device

source of heat

current limiting device

15. Which terminal does not belongs to the SCR?

Anode

Gate

Base

Cathode

16. In indicationg instruments with linear scale is

Free from hysteresis and eddy current losses

Free from temperature errors

Dependent on temperature errors

Both a and b

17. Electrostatic voltmeter instruments are suitable for

AC work only

DC work only

Both AC and DC work

None of the above

18. Electrostatic instruments are generally used as

Voltmeters

Ammeters

Wattmeters

Watt-hours meters

19. Due to overdamping, the instrument will become

Slow

Lethargic

Fast

Both a and b

20. Tesla coil is a .... transformer

Coreless

Cascaded

Low impedance

High frequency resonant

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