For ammeter shunts. which one of the following is not a possible requi – McqOptions

MCQOPTIONS

1.	For ammeter shunts. which one of the following is not a possible requirement?
A.	It should have high thermal automotive force
B.	It should carry current without excessive temperature rise
C.	Its resistance should not vary with time
D.	Its temperature coefficient must be low
Answer» B. It should carry current without excessive temperature rise

Discussion

No Comment Found

Related MCQs

An accurate ammeter must have a resistance of:
An MC ammeter has a shunt of 0.2 Ω and a coil circuit resistance of R = 100 Ω. The instrument can take maximum of 5 V. Determine the maximum current the instrument can handle.
A galvanometer with a full-scale current of 10 mA has a resistance of 1000 Ω. The multiplying power (the ratio of measured current to galvanometer current) of a 100 Ω shunt with this galvanometer is:
In order to increase the range of measuring voltage, ______ is connected in ______ with voltmeter.
How will you extend the range of measurement in case of an ammeter and voltmeter?
A moving coil instrument has resistance of 5 Ω and gives a full-scale reading of 100 mA. It is desired to use this meter as a voltmeter for a range of 0 to 500 V. The resistance required is:
A moving coil instrument of resistance 5Ω requires a potential difference of 75 mV to give a full scale deflection. The value of shunt resistance needed to give a full scale deflection at 30 A is
How to convert a (0 to 1) mA meter to measure the current in the range of 1 to 100 mA ? The internal resistance of the meter is 100 Ω.
A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in connected in series with the instrument is
For ammeter shunts. which one of the following is not a possible requirement?