MEASURING INSTRUMENT - Practice Mode

1) Which error is caused by the braking system of energy meter?
Correct Answer: Speed error
2) How many segments in LCD displays in Digital Multi Meter (DMM)?
Correct Answer: 7
3) Which is the angle of two moving coils rigidly attached to each other of a dynamo meter type 3 phase P.F meter?
Correct Answer: 120 Degree
4) Which principle the instrument transformers work?
Correct Answer: Mutual induction
5) How the burden of current transformer is expressed?
Correct Answer: Volt ampere