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.Management Sciences
Category: Electronic instruments
The materil used to coat inside the face of CRT is ______________?
0
A. Carbon
B. Sulphur
C. Silicon
D. Phosphorous
What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 µA of full-scale current ?
A. 10 kO
B. 20 kO
C. 200 kO
D. None of the above
A galvanometer in series with a high resistance is called_______________?
A. An ammeter
B. A voltmeter
C. A wattmeter
D. None of the above
A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?
A. GS/(G+S)
B. G+S
C. G-S
D. None of the above
When an ammeter is inserted in the circuit, the circuit current will _____________?
A. Increase
B. Decrease
C. Remain the same
D. None of the above
Two multimeters A and B have sensitivities of 10 kO/V and 30 kO/V respectively. Then ______________?
A. Multimeter A is more sensitive
B. Multimeter B is more sensitive
C. Both are equally sensitive
D. None of the above
The sensitivity of a multimeter is given in _______________?
A. O
B. Amperes
C. kO/V
D. none of the above
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