Model Question set 3 for NEA, NTC, PSC, CANN

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. The most expensive bus bar scheme is
single bus bar scheme
ring bus bar scheme
double bus bar double breaker scheme
main and transfer scheme
2. Guard ring transmission line
improves power factor
reduces earth capacitance of the lowest unit
reduces transmission losses
improves regulation
3. For the same power transmission, neglecting losses in a transmission line system, if voltage is doubled, the weight of the conductor materials required will be
four times
double
half
one fourth
4. The frequency of the voltage generated in the alternator depends on
number of poles
rotative speed
number of poles and rotative speed
number of poles and type of winding
5. The frequency of the voltage generated by an alternator for 8 poles and rotating at 250 rpm
60 Hz
50 HZ
25 Hz
50/3 Hz
6. An alternator is of 210 V per phase and running at 1500 rpm. If the speed of alternator drops to 1000 rpm, the generated voltage per phase will be
180 V
150 V
140 V
105 V
7. The repeat accuracy of the instrument can be judged from
static error
linearity error
dynamic error
standard deviation of error
8. Which of the following meters has linear scale?
Thermocouple meter
Moving iron meter
Hot wore meter
Moving coil meter
9. No eddy current and hysteresis losses occurs in case of
Electrostatic instruments
PMMC instruments
Moving iron instruments
Elctrodynamo meter instruments
10. In which district the project " Upper Tamakoshi Hydropower Project" is Located?
Ramechhap
Dolakha
Sindhupalchok
Sindhuli
11. According to the latest report published by NEA what is the peak demand of past final year,
1291 MW
1098 MW
1539 MW
1963 MW
12. What is highest capacity plant in operation in Nepalese power system?
102 MW
90 MW
144 MW
456 MW
13. The element of electric heater is made of
copper
steel
carbon
nichrome
14. Winding conductors of power transformers are usually insulated by
rubber
wood
paper
cotton
15. Which one of the following elements serves as a protection against overload?
fuse
switch
resistor
relay
16. Which of the following below bridge is frequency sensitive ?
Wheatstone bridge
Maxwell bridge
Anderson bridge
Wein bridge
17. Potentiometer is an .... instruments
Indicationg
Comparision
Calibrating
Recording
18. The megger indicates infinity when its test terminals are open-circuited because
No current flows through the current coil
No current flows through the pressure coil
No current flows through the compensating winding
Current doesn't flow through the current coil and the pressure coil
19. A ohmmeter is basically:
A ammeter
A voltmeter
A multimeter
None of the above
20. While testing cable, the galvanometer should be initially short-circuited in order to protect it from sudden initial inrush currents as the cable have
low value of initial resistance
low value of initial capacitance
high value of initial capacitance
Both a and b

Answer of all questions

1. The most expensive bus bar scheme is
- double bus bar double breaker scheme
2. Guard ring transmission line
- reduces earth capacitance of the lowest unit
3. For the same power transmission, neglecting losses in a transmission line system, if voltage is doubled, the weight of the conductor materials required will be
- one fourth
4. The frequency of the voltage generated in the alternator depends on
- number of poles and rotative speed
5. The frequency of the voltage generated by an alternator for 8 poles and rotating at 250 rpm
- 50/3 Hz
6. An alternator is of 210 V per phase and running at 1500 rpm. If the speed of alternator drops to 1000 rpm, the generated voltage per phase will be
- 140 V
7. The repeat accuracy of the instrument can be judged from
- standard deviation of error
8. Which of the following meters has linear scale?
- Moving coil meter
9. No eddy current and hysteresis losses occurs in case of
- Electrostatic instruments
10. In which district the project " Upper Tamakoshi Hydropower Project" is Located?
- Dolakha
11. According to the latest report published by NEA what is the peak demand of past final year,
- 1539 MW
12. What is highest capacity plant in operation in Nepalese Mower system?
- 456 MW
13. The element of electric heater is made of
- nichrome
14. Winding conductors of power transformers are usually insulated by
- paper
15. Which one of the following elements serves as a protection against overload?
- fuse
16. Which of the following below bridge is frequency sensitive ?
- Anderson bridge
17. Potentiometer is an .... instruments
- Comparision
18. The megger indicates infinity when its test terminals are open-circuited because
- No current flows through the current coil
19. A ohmmeter is basically:
- A ammeter
20. While testing cable, the galvanometer should be initially short-circuited in order to protect it from sudden initial inrush currents as the cable have
- high value of initial capacitance