AC and DC Measuring Instruments MCQ with Answers

AC and DC Measuring Instruments MCQ with Answers

16) Which meter movement is not affected by stray magnetic fields?

Answer is:

PMMC meter

17) Which characteristics enable the deflection of pointer in the attraction type moving iron meter?

Answer is:

Deflection is independent of current direction

18) Which band of frequency is used for RADAR in frequency spectrum allotted by the International Telecommunication Union (ITU)?

Answer is:

ITU band - 10

19) Which control is used in repulsion type moving iron instrument to keep the pointer at zero position?

Answer is:

Spring control

20) Which frame is used for winding the coil of PMMC meter?

Answer is:

Aluminium frame