Consider the following instruments:1. MI instrument2. Electrostatic in – McqOptions

MCQOPTIONS

1.	Consider the following instruments:1. MI instrument2. Electrostatic instrument3. Electrodynamometer instrumentWhich of the above instruments is/are free from hysteresis and eddy-current losses?
A.	1 only
B.	2 only
C.	3 only
D.	1, 2 and 3
Answer» C. 3 only

Discussion

No Comment Found

Related MCQs

A PMMC instrument which take 10 mA at 50mV potential difference maximum. How much resistance is to connect across the instrument such that the instrument can measure (0 to 10) A current?
In Hot-wire instruments, the deflections:
In dynamometer wattmeter the compensation coil
How will you test the supply in plug point?
In electrodynamometer type wattmeter, a high non inductive resistance is connected in _________.
Consider the following statements:Sphere gap method of voltage measurement is used1. for measuring r.m.s. value of a high voltage2. for measuring peak value of a high voltage3. as the standard for calibration purposesWhich of the above statements are correct?
Alternating current can be measured by
Energy meters fall into the category of:
A current I = 5 + 14.14 sin (314t + 45°) is passed through a centre zero PMMC, hot wire and moving iron instrument, the respective reading are
Electrostatic instruments are suitable for the measurement of: