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MCQ Questions for CBSE Class 12 with Answers
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MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
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MCQ Questions for CBSE Class 1 with Answers
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Power engineering Gate & PSU MCQ Questions With Answers
1.
In an E plane tee the signal leaving the second and the third port will be equal in magnitude and similar in phase with respect to the input signal
True
False
2.
Open ended waveguide in which one end is flared
Directional coupler
Waveguide Tee
Waveguide Horn Antenna
All of above
3.
Porcelain is produced by firing at high temperature of which all mixtures?
Kaolin
Feldspar
Quartz
All of these.
4.
Water tubes in vertical boiler are __________
horizontal
vertical
inclined
none
5.
The waveguide tee in which the axis of the side arm is shunting the E field of the main waveguide
E plane Tee
H plane Tee
6.
Attenuation in fixed attenuators are achieved by:
capacitive films within the waveguide
using crystal diode
using resistive films within the waveguide
None of these
7.
The hollow metallic tube that conducts EM Waves
Klystron Mount
Waveguide
8.
PIN modulator is used along with Gunn oscillator to improve:
Voltage
Modulation
9.
Choose the microwave components that have a provision to detect the propagating EM signal
Slotted Line Section
Tunable Probe
Waveguide Detector Mount
All of above
10.
Intial cost of thermal power plant is __________ than nuclear power plant
Higher
lower
more
none
11.
Which of the following statements hold good for directional coupler
A portion of the power travelling from Port 2 to Port 1 is coupled to Port 3 but not to Port 4
A portion of the power travelling from Port 2 to Port 1 is coupled to Port 4 but not to Port 3
A portion of the power incident on Port 3 is coupled to Port 1 but not to Port 2
All of above
12.
A economizer in a boiler
Increases steam pressure
Increases steam flow
Decreases steam pressure
Decreases fuel consumption
13.
There is no restriction in the number of ports for circulators
True
False
14.
Where is the suspension type of insulators mainly used?
RCC poles
Wooden poles.
Steel poles.
Steel towers
15.
Tunable probe is used for
Tuning the frequency of the EM Wave within the waveguide
Impedance matching
Exploring the EM wave within the waveguide
None of these
16.
Solid fuel used in ______________ power plants
Thermal
Hydro
Diesel
gas turbine power plant
17.
Waveguide Tee that is employed in balanced mixers
E plane Tee
H plane Tee
Magic Tee
None of these
18.
What is the maximum voltage level upto which the pin type insulators can be used?
22 kV
33 kV
66 kV
132 kV
19.
The voltage across the various discs of a string of suspension insulator having identical discs is different due to
Surface leakage currents.
Series capacitance
Shunt capacitance to ground
Series and shunt capacitance.
20.
The microwave device used to rotate the plane of polarization of the waveguide transmission line
Phase Shifter
Tee
Twist
None of these
21.
The number of discs in a string of insulators for 400 kV ac over head transmission line lies in the range of
32 – 33
22 – 23
15 – 16
9 – 10
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