Related Questions

A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is ___________.
A nG
B $$\frac{{\text{G}}}{{\text{n}}}$$
C $$\frac{{\text{G}}}{{{\text{n}} - 1}}$$
D (n - 1)G
A voltmeter is connected across the current path.
A True
B False
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).
A H
B 12.6 H
C 13.6 H
D 14.6 H
The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures
A Active power in R phase
B Active power of Y phase
C Reactive power of R phase
D Power proportional to 3 phase power if the load is balanced
Which of the following is measured by using a vector voltmeter ?
A Amplifier gain and phase shift
B Filler transfer functions
C Complex insersion loss
D All of the above
On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?
A 1 V
B 50 V
C 500 V
D 1,000 V
The higher the range setting, the less the internal resistance and the greater the load effect of the voltmeter on a circuit.
A True
B False
When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is
A Same in both the phases
B Zero in both the phases
C More in vapour phase
D More in liquid phase
The potential gradient across the material of low permittivity is than across the material of high permittivity.
A smaller
B greater
C both (A) and (B)
D none of the above
A voltmeter should have ___________ resistance.
A Zero
B Very high
C Very low
D None of the above

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