Identify the 'CORRECT' statements,
1. Loading effect is primarily caused by instruments having low sensitivity.
2. Relative error is the difference between the measured value and the true value.
3. Resolution is small increment is measurand that can be detected with certainty by the instrument.
4. Moving-coil permanent magnet instruments can be used for the measurements of AC and DC.
A. 1 and 4
B. 2 and 4
C. 1 and 3
D. 2 and 3
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Measurement And Instrumentation
The spring material used in a spring control device should have the following property.
A. Should be nonmagnetic
B. Most be of low temperature coefficient
C. Should have low specific resistance
D. All of the above
Why is a MISC meter not recommended for DC measurement?
A. The meter is calibrated for AC and it’s error for DC would be high
B. The meter does not respond to DC signals
C. The error is high due to hysteresis effect
D. The error is high due to eddy current effect
A moving iron ammeter may be compensated for frequency errors by
A. A shunt resistance
B. A series inductance
C. Shunt capacitance
D. Series resistance
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