# The sensitivity of a voltmeter using 0 to 5 mA meter movement is

1.  50 ohm / volt

2.  100 ohm./ volt

3.  200 ohm/ volt

4.  500 ohm / volt

4

200 ohm/ volt

Explanation :
No Explanation available for this question

# If a dynamometer type wattmeter is connected in an ac circuit the power indicated by the wattmeter will be

1.  volt ampere product

2.  average power

3.  peak power

4.  instantaneous power

4

average power

Explanation :
No Explanation available for this question

# DC voltage of the order of a few mV can be Measured accurately using a/an

1.  moving coil Voltmeter

2.  null-balancing Potentiometer

3.  moving iron voltmeter

4.  electrostatic voltmeter

4

null-balancing Potentiometer

Explanation :
No Explanation available for this question

# The "aecuracy" Of a measuring determined by

1.  Closeness of the Value indicated by it to the correct value of the measured

2.  repeatability of the measured value

3.  speed with which the instruments's reading approaches the final value

4.  least change in the value, of the measured that could be detected by the instrument

4

Closeness of the Value indicated by it to the correct value of the measured

Explanation :
No Explanation available for this question

# In the two-Wattmeter method of measuring power in a balanced three phase circuit, one Wattmeter shows zero and the other positive maximum. The load Power factor is

1.  zero

2.  0.5

3.  0.866

4.  1.0

4

0.5

Explanation :
No Explanation available for this question

# A 35 V dc supply is connected across a resistance of 600 ohm in series with an unknown resistance Rx. A voltmeter having a resistance of 1.2 k-ohm is connected across 600 ohm resistance and reads 5V.1T2heovalue of resistance Rx will be

1.  120 ohm

2.  400 ohm

3.  1.8 ohm

4.  2.4 k-ohm

4

2.4 k-ohm

Explanation :
No Explanation available for this question

# 'Creep' is energy meters can be prevented by

1.  using extra turns on the voltage coil

2.  having two holes on opposite sides of the disc

3.  using a stronger brake magnet

4.  using steel laminations of high permeability

4

having two holes on opposite sides of the disc

Explanation :
No Explanation available for this question

# The sensitivity of an instrument is the

1.  smallest increment in the input that can be detected with certainty

2.  largest input change to which the instrument fails to respond

3.  ratio of the change in the magnitude of the output to the corresponding change in the magnitude of the input

4.  closeness of the output values for repeated applications of a constant input

4

ratio of the change in the magnitude of the output to the corresponding change in the magnitude of the input

Explanation :
No Explanation available for this question

# The internal resistance of Weston standard cell is of the Order Of

1.  1 ohm

2.  10 ohm

3.  100 ohm

4.  1000 ohm

4

1 ohm

Explanation :
No Explanation available for this question

1.  V1/V2

2.  1.11V1/V2

3.  √2V1/V2

4.  πV1/V2

4