Electrical Engineering practice bits -25
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. The
efficiency of a thermal power plant is about
a. 10%
b. 30%
c. 60%
d. 80%
2. For
low head and high discharge, the hydraulic turbine used is
a. Francis
turbine
b. Pelton
wheel
c. Kaplan
turbine
d. None
3. Base
load plants are designed to supply power at
a. High
capital cost and low operating cost
b. Low
capital cost and high operating cost
c. Low
capital cost and low operating cot
d. High
capital cost and high operating cost
4. Which
of the following plant is the least reliable
a. Wind
b. Tidal
c. Geothermal
d. Solar
5. The
expansion of XLPE cable is
a. X-line
ower cable
b. Cross
line polythene enameled cable
c. Cross
linked poly ethylene cable
d. X-layer
of poly ethylene cable
6. The
maximum permissible value of earth resistance for a small substation is
a. 3Ω
b. 2 Ω
c. 6 Ω
d. 1 Ω
7. Now
a day’s fuses are replaced by MCB because they are
a. Fast
operating
b. Easy
operating
c. Automatic
breaking
d. All
the above
8. While
using wooden poles in a service line, the span should not exceeds
a. 100
to 300 m
b. 60
to 100m
c. 50
to 80m
d. 40
to 50 m
9. What
is the other name of PCB(printed circuit board)
a. Copper
laminated boards
b. Tag
boards
c. Tug
boards
d. Bread
boards
10. The
terminals of TRIAC are
a. Base,
collector, emitter
b. Anode,
cathode, gate
c. MT1,
MT2, gate
d. Source,
drain, gate
11. IGBT
stands for
a. Insulated
gate bipolar transistor
b. Integrated
gate bipolar transistor
c. Insulated
gate based trigger
d. Integrated
gate based transistor
12. The
electrical degree of 6 pole of AC motor is
a. 10800
b. 7200
c. 5400
d. 3600
13. The
unit of current density
a. Ampere/m2
b. Ampere/
second
c. Ampere/
m
d. Amp.m2
14. How
many parallel paths in 6 pole simplex lap wound armature in DC generator is ___
a. 4
b. 6
c. 8
d. 12
15. The
percentage of full load torque develops at starting by universal motor is about
a. 300%
b. 350%
c. 400%
d. 450%
16. The
universal motor works on the same principle of which type of machine
a. Dc
generator
b. DC
motor
c. AC
induction motor
d. AC
generator
17. In
shaded pole single phase motor the revolving field is produced by
a. Capacitor
b. Regulator
c. Shading
ring
d. Winding
18. The
suitable motor for domestic fan is
a. Dc
shunt motor
b. Dc
series motor
c. 1-
induction motor
induction motor
d. Synchronous
motor
19. The
formula to calculating the synchronous speed (NS) of 3- induction motor is
induction motor is
a. Ns=
b. Ns=
c. Ns=
d. Ns=
20. What
is the fuse rating that can be selected for a 10 HP induction motor
a.
10A
b.
15A
c.
20A
d.
25A
ANSWERS
1.B
|
2.C
|
3.A
|
4.A
|
5.D
|
6.D
|
7.D
|
8.D
|
9.A
|
10.C
|
11.A
|
12.A
|
13.A
|
14.B
|
15.D
|
16.B
|
17.C
|
18.C
|
19.A
|
20.D
|
FOR MORE PRACTICE BITS CLICK BELOW LINKS 👇👇👇👇
https://www.electricalforu.com/2020/01/electrical-engineering-practice-bits-16.html
👇👇👇👇Android Apps for Students 👇👇👇👇
Electrical Machines Nptel Notes
gate previous papers
ese previous papers
nptel Electrical machines videos
nptel power electronics notes
