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MCQ
BASIC ELECTRONICS
CONTROL SYSTEM ENGINEERING
DIGITAL ELECTRONICS
ELECTRICAL CIRCUIT ANALYSIS
ELECTRICAL ENERGY CONSERVATION AND AUDITING
ELECTRICAL ENGINEERING MATERIALS
ELECTRICAL MACHINES
ELECTRICAL VEHICLES
ELECTRICAL WIRING
ELECTROMAGNETICS
MEASUREMENT & INSTRUMENTATION
MICROPROCESSOR AND MICROCONTROLLER INTERFACING
POWER ELECTRONICS & DRIVES
POWER SYSTEM
SIGNALS & SYSTEMS
UTILIZATION OF ELECTRICAL ENERGY
MEASUREMENT & INSTRUMENTATION
Q1.
The most efficient form of damping employed in electrical instrument is
air damping
fluid friction
eddy currents
none of the above
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Solution
Q2.
Which of the following is the correct advantage of gravity control compared to spring control?
It is subjected to low fatigue
It also depends upon temperature
It is cheaper comparatively
It does not gives any cramped scale
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Solution
Q3.
By resolution of an indicating instrument is meant
the smallest change in the output reading due to drifting of pointer
the smallest change in applied stimulus which will indicate a detectable change in deflection
the difference between various readings for the same applied stimulus
none of these
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Solution
Q4.
An 0-10 A ammeter has a guaranteed accuracy of 1 percent of full scale deflection. The limiting error while reading 2.5 A is
1%
2%
4%
none of above
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Solution
Q5.
Which of the following is the disadvantage of PMMC instruments?
The PMMC is very delicate instrument
It has a high torque to weight ratio
It produces low losses due to hysteresis
It does not have uniformly divide scale
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Solution
Q6.
In an induction type of meter, maximum torque is produced when the phase angle between two fluxes is:
0°
45°
60°
90°
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Solution
Q7.
Potentiometer is basically a___________ instrument.
digital
deflection type
null type
recording
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Solution
Q8.
A potentiometer may be used for
Measurement of resistance
Calibration of ammeter and voltmeter
Measurement of current
All of the above
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Solution
Q9.
Which of the following is not an application of potentiometer?
Calibration of voltmeter
Calibration of ammeter
Testing of wattmeter
Testing of frequency meter
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Solution
Q10.
The secondary of a current transformer is always kept shorted under operating conditions because it
Avoids core saturation and high voltage induction
Protects the windings
Is safe to human beings
Protects the primary circuit
Show Answer
Solution
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