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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 8
16.
It is required to measure a low magnitude high frequency current. The proper instrument is
moving iron
dynamometer
thermocouple
induction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Bridge circuits using RTD in temperature measurement usually employ 3 lead system so as to obtain
higher sensitivity
better impedance matching
compensation for signal wire resistance
reduction in power consumption
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The stator of phase shifting transformer for use in conjunction with an ac potentiometer has a
single phase winding
two phase winding
3 phase winding
either (a) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
An average responding voltmeter using full wave rectifier has been calibrated to read 1 V for 1 V rms sinusoidal input. For 1 V peak to peak square wave input, the meter reading will be
zero V
p2 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The sensitivity of a potentiometer can be increased by
increasing the length of wire
decreasing the length of wire
increasing the current in the wire
decreasing the current in the wire
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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