# Mr Electro

Hi Mr Electro family!! This is an educational website for electrical stream ( Electrical engineering, Diploma student and PreDiploma students) . This is mainly focused for those students who are waiting for Government jobs like LokSewa Aayog PSC, NEA, CANN NTC for level 3, level 4, level 5 and level 7 and also private jobs.

## Monday, August 15, 2022

This website is a source material provider for NEA, NTC, PSC, CANN preparation students for level 3, level 4, level 5, level 6, level 7 for Electrician, Foreman, Supervisor, Assistant Enginner, & Enginner. You can find NEA question paper level 4 || Electrical loksewa Level 4 2074 (remaining part) in below.

## Electrical Level 4 Foreman 2074 taken by LokSewa for NEA.

Multiple Choice
50x2=100 Marks

1. The system frequency must be within
a) 1% of the declared frequency
b) 0.1% of the declared frequency
c) 10% of the declared frequency
d) 3Hz of the declared frequency
2. The potential transformer is sensitive towards
a) change in voltage
b) change in current
c) change in power
d) change in frequency
3. A transformer can
a) increase the voltage at same frequency
b) decrease the voltage at same frequency
c) both A and B
d) none of the above
4. Two transformers are said to be operating parallely
a) connected to same supply on primary side and to a same load on secondary side
b) connected to different supply on primary side and to a same load on secondary side
c) connected to same supply on primary side and to different load on secondary side
d) connected to different supply on primary side and to different load on secondary side
5. For successful paralled operation of generators the presence of is essential, in their _____ armatures.
a) Resistance
b) Reactance
c) Capacitance
d) Reluctance
6. A basic function of transformer is to change
a) level of the voltage
b) 3 power level
c) power factor
d) frequency
7. In a dc generator having P number of poles and speed of N rpm, the frequency of magnetic reversals will be
a) PN/2
b) PN/60
d) PN/240
c) PN/120
8. Which one is true of Kaligandaki 'A' hydropower plant?
a) 144 MW 6 units
b) 144 MW 4 units
c) 144 MW 3 units
d) 140 MW 2 units
9. The storage type hydro electric plant of Nepal is
a) Upper Tamakoshi
b) Kulekhani-I
c) Middle Marsyangdi
d) All of the above
10. The location of surge tank, in an hydroelectric power station is near
a) turbine
b) tail race
c) reservoir
d) dam
11. Which of the following doesn't take a part in regulating flow of water in hydro electric power plant?
a) Forebay
b) Spillway
c) Draft tube
d) Surge tank
12. In pumped storage power plants
a) water is recirculated through water turbines
b) reversible turbines a operates as turbine for power generation during peak load hours and as pumpc) plain Francis turbines are used
c) plain Francis turbines are used
d) all of the above
13. In hydro-electric power plants
a) operating cost is low and the initial cost is high
b) operating cost is high and the initial cost is low
c) both operating cost as well as the initial cost are high
d) both operating cost as well as the initial cost are low
14. In any A.C. circuit always
a) the reactive power is more than the apparent power
b) active power is more than the apparent power
c) apparent power is less than the actual power
d) apparent power is more than the actual power
15. If resistance R1, and R2, are connected in parallel, than equivalent resistance R is
a) R = R1 + R2
b) R= (R1 + R2)/(R1.R2)
c) R = R1.R2
d) R = R2

Other extra question

16. Which of the following instruments can be used for the full scale deflection of 300
PMMC
Induction type
Hot wire
Electrostatics
17. The instrument having deflection depends upon the average value is:
Moving iron
Hot wire
Reftifier type
Induction type
18. Which of the following instruments have the least torque/weight ratio?
Dynamometer type
PMMC
Attraction type moving iron
Repulsion type moving iron
19. Which of the following voltmeter have the least power consumption?
Moving iron
How wire
Electrostatic
Induction type
20. The measurement range of a voltmeter can be extended by using
High current resistance
High series resistance
Low shunt resistance
Low series resistance