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Two multimeters A and B have sensitivities of 10 kO/V and 30 kO/V respectively. Then ______________?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

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 ?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement ?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

When an ammeter is inserted in the circuit, the circuit current will _____________?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

A VTVM is never used to measure ______________?

August 11, 2021December 22, 2018 by admin
A VTVM is never used to measure ______________?

A. Voltage
B. Current
C. Resistance
D. None of the above

Categories Electronic instruments

For display of signal pattern _____________voltage is applied to the horizontal plates of a CRO?

August 11, 2021December 22, 2018 by admin
For display of signal pattern _____________voltage is applied to the horizontal plates of a CRO?

A. Sinusoidal
B. Rectangular
C. Sawtooth
D. None of the above

Categories Electronic instruments

A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

The sensitivity of a voltmeter which uses a 100 µA meter movement is ____________?

August 11, 2021December 22, 2018 by admin
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

Categories Electronic instruments

The materil used to coat inside the face of CRT is ______________?

August 11, 2021December 22, 2018 by admin
The materil used to coat inside the face of CRT is ______________?

A. Carbon
B. Sulphur
C. Silicon
D. Phosphorous

Categories Electronic instruments

The most accurate device for measuring voltage is ____________?

August 11, 2021December 22, 2018 by admin
The most accurate device for measuring voltage is ____________?

A. Voltmeter
B. Multimeter
C. CRO
D. VTVM

Categories Electronic instruments
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