Electronic instruments Archives

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

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

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

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 ?

Electronic instruments / 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

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 ? Read More »

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 ?

Electronic instruments / 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

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

Electronic instruments

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

Electronic instruments / 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

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

Electronic instruments

A VTVM is never used to measure ______________?

Electronic instruments / admin

A VTVM is never used to measure ______________?

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

A VTVM is never used to measure ______________? Read More »

Electronic instruments

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

Electronic instruments / 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

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

Electronic instruments

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

Electronic instruments / 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

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

Electronic instruments

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

Electronic instruments / 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

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

Electronic instruments

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

Electronic instruments / admin

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

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

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

Electronic instruments

The most accurate device for measuring voltage is ____________?

Electronic instruments / admin

The most accurate device for measuring voltage is ____________?

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

The most accurate device for measuring voltage is ____________? Read More »

Electronic instruments