Electrical Engineering practice bits -14
The following practice bits are useful the Electrical Aspirants who are preparing for the Different competitive exams like RRB JE ,SSC JE, ECET , GATE , PSU, PGECET,DRDO CEPTAM ,TSTRANSCO, TSGENCO, TSSSPDCL , TSNPDCL AE AND SE, APTRANSCO, APGENCO, ....ETC
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https://www.electricalforu.com/2020/01/electrical-engineering-practice-bits-12.html
The following practice bits are useful the Electrical Aspirants who are preparing for the Different competitive exams like RRB JE ,SSC JE, ECET , GATE , PSU, PGECET,DRDO CEPTAM ,TSTRANSCO, TSGENCO, TSSSPDCL , TSNPDCL AE AND SE, APTRANSCO, APGENCO, ....ETC
MCQ Questions With Answers
1. Resistance
of 250V, 100W lamp will be___
a.
0.4Ω
b.
25
Ω
c.
625
Ω
d.
2.5
Ω
2. Arc
lamps operated on
a.
Ac
only
b.
Dc
only
c.
Ac
and dc
d.
none
3. The
storage battery generally used in electric power station is
a.
Ni-cd
battery
b.
Zinc-carbon
battery
c.
Lead-acid
battery
d.
None
4. The
output voltage of a charges is ____
a. Less
than the battery voltage
b. Same
as the battery
c. Higher
than the battery voltage
d. None
5. Reciprocal
of reluctance is
a.
Susceptibility
b.
Permeability
c.
Permeance
reluctivity
6. The
force between two long parallel conductor is inversely proportional to __
a. Current
in one conductor
b. Product
of current in two conductors
c. Distance
between the conductors
d. Radius
of conductor
7. The
direction of magnetic lines of force is determined by
a. Right
hand rule
b. Right
hand cork screw rule
c. Both
of a and b
d. None
8. Which
of the following generator can be used for
welding process
a. Series
generator
b. Shunt
generator
c. Differentially
compound generator
d. Differentially
compound motor
9. Q-factor
increases by ____
a. Decreasing
band width
b. Increasing
band width
c. All
of the above
d. None
10. Q
meter works on the principle of
a. Series
resonance
b. Parallel
resonance
c. Both
a and b
d. None
11. In
an intrinsic semiconductor the mobile carriers are
a. Electron
only
b. Holes
only
c. Both
electrons and holes
d. Positive
and negative ions
12. Stepup
transformer is required to supply
a. 60W 230V
electric lamp
b. Electric
bell
c. Neon
lamps
d. None
13. Step
down transformer is required to supply
a.
60W 230V electric lamp
b.
Electric
bell
c.
Neon
sign
d.
None
14. Voltage
of a miniature size night bulb used in house is
a.
230V
AC
b.
230V
DC
c.
6V
AC
d.
6V
DC
15. Standard
frequency to supply in India is
a.
60Hz
b.
50
Hz
c.
25
Hz
d.
None
16. The
voltage of domestic supply is 220V. This figure represents ____
a. Mean
value
b. Rms
value
c. Peak
value
d. Average
value
17. The
rms value and mean value is the same in the case of ____
a. Triangular
wave
b. Sine
wave
c. Square
wave
d. Half
wave sectified sine wave
18. Speed
regulation of series motor is
a. Positive
b. negative
c. both
a and b
d. none
19. thermocouple
works on the principle of
a. peltier
effect
b. seebect
effct
c. Ferranti
effct
d. Skin
effect
20. The
i/p impedance of a CRO is ___
a. Zero
b. Around
100Ω
c. Around
1000 Ω
d. Around
one mega ohm
21. Conductivity
of aluminium is compared to copper is
a. 80%
b. 100%
c. 60%
d. 67%
22. 132KV
transmission line employs
a. Shackle
b. Pin
c. Disc
type insulator
d. Plug
23. 400V
line at dead end employs _____
a. Shackle
b. Pin
c. Disc
type insulator
d. None
24. Efficiency of Highest transmission voltage is
a. 85
-95%
b. 65-75%
c. 50-60%
d. 50%
25. RL
circuit having a power factor is
a. unity
b. zero
power factor
c. lagging
d. leading
26. which
damping is employed in MI
a.air friction damping
b.fluid friction
c.eddy current damping
d,spring damping
Answers
01.c
|
2.d
|
3.c
|
4.b
|
5.c
|
6.c
|
7.c
|
8.c
|
9.a
|
10.b
|
11.c
|
12.c
|
13.c
|
14.c
|
15.b
|
16.b
|
17.c
|
18.b
|
19.b
|
20.d
|
21.c
|
22.c
|
23.a
|
24.c
|
25.c
|
26.a
|
||||
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https://www.electricalforu.com/2020/01/electrical-engineering-practice-bits-12.html
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