A. More
B. Less
C. Same
D. None of the above
✅ The correct answer is option A.
Electronic instruments MCQs
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 correct answer is option B.
A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement ?
A. 3 kO
B. kO
C. kO
D. 6 kO
✅ The correct answer is option A.
A voltmeter should have ____________resistance?
A. Zero
B. Very high
C. Very low
D. None of the above
✅ The correct answer is option B.
A voltmeter is connected in a _____________ with the circuit component across which potential difference is to be measured?
A. Parallel
B. Series
C. Series or parallel
D. None of the above
✅ The correct answer is option A.
A galvanometer in series with a high resistance is called_______________?
A. An ammeter
B. A voltmeter
C. A wattmeter
D. None of the above
✅ The correct answer is option B.
If a multimeter has a sensitivity of 1000 O per volt and reads 50 V full scale, its internal resistance is _____________?
A. 20 kO
B. 50 kO
C. 10 kO
D. None of the above
✅ The correct answer is option B.
If the full-scale deflection current of a multimeter is 50 µA, its sensitivity is ________________?
A. 10 kO/V
B. 100 kO/V
C. 50 kO/V
D. 20 kO/V
✅ The correct answer is option D.
The sensitivity of a voltmeter which uses a 100 µA meter movement is ____________?
A. 1 kO/V
B. 10 kO/V
C. 5 kO/V
D. Data insufficient
✅ The correct answer is option B.
The materil used to coat inside the face of CRT is ______________?
A. Carbon
B. Sulphur
C. Silicon
D. Phosphorous
✅ The correct answer is option D.