## Which of the following is likely to have the largest resistance ?

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# Electronic instruments

## If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of…

If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is ________________? A. G/50B. G/49 C. 49 G D. 50 G

## The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?

The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal? A. Sinusoidal wave B. Cosine waveC. Sawtooth wave D. None of the above

## An ideal ammeter has ______________ resistance?

An ideal ammeter has ______________ resistance? A. Low B. InfiniteC. Zero D. High

## To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt…

To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________? A. 11 O B. 9 O C. 100 O D. 9 O

## If the negative potential on the control grid of CRT is increased, the intensity of spot…

If the negative potential on the control grid of CRT is increased, the intensity of spot _____________? A. Is increasedB. Is decreased C. Remains the same D. None of the above

## 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 sensitiveB. Multimeter B is more sensitive C. Both are equally sensitive 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…

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 kOC. 200 kO D. None of the above

## A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale…

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

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

When an ammeter is inserted in the circuit, the circuit current will _____________? A. IncreaseB. Decrease C. Remain the same D. None of the above

## A VTVM is never used to measure ______________?

A VTVM is never used to measure ______________? A. VoltageB. Current C. Resistance D. None of the above