is viscoelastic.
Glass
Rubber
Cast-iron
Graphite
Rubber
Carbon electrodes are not used in
GLS lamps
electric arc furnace
dry cells
cinema projectors
GLS lamps
is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another
None of the above
Current transformer
Tangent galvanometer
Megger
Megger
The resistance in the circuit of the moving coil of a dynamometer wattmeter should be
almost zero
low
high
none of the above
high
In a low power factor wattmeter the compensating coil is connected
in series with pressure coil
in parallel with pressure coil
in parallel with current coil
in series with current coil
in series with pressure coil
The household energy meter is
an integrating instrument
a recording instrument
an indicating instrument
none of the above
an integrating instrument
In a low power factor wattmeter the pressure coil is connected
none of the above
to the load side of the current coil
to the supply side of the current coil
in any of the two meters at connection
to the load side of the current coil
The pointer of an indicating instrument should be
very light
very heavy
either or
neither nor
very light
The pressure coil of a wattmeter should be connected on the supply side of the current coil when
none of the above
supply voltage is low
load impedance is low
load impedance is high
load impedance is high
The chemical effect of current is used in
D.C. ammeter
D.C. energy meter
D.C. ammeter hour meter
none of the above
D.C. ammeter hour meter
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