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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 8
6.
Burden of an instrument transformer is expressed in
A
V-A
Ω
watt
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following devices should be used for accurate measurement of a low dc voltage?
Small range moving coil voltmeter
Dc potentiometer
Small range thermocouple voltmeter
Hot wire instrument
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
If σ is standard deviation, variation is
σ - 1
σ1.5
σ2
σ3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
An electrodynamometer instrument has the advantage of
freedom from hysteresis and eddy currents because air cored coils are used
freedom from hysteresis and eddy currents because cores of coils have special ferromagnetic material
high torque/weight ratio
low cost
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The dimensions of permittivity are
L-3M-1T2Q2
L-1M-1T2Q2
L2MT-1Q-1
L-2M-1T2Q2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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