Q.1
A mulliammeter can be used as
Q.2
Wagner earthing device is used to eliminate errors due to
Q.3
Some wire- wound resistors have bifilar winding. This type of winding is used to
Q.4
The pressure coil of a wattmeter should be connected on the supply side of the current coil when
Q.5
An oscilloscope indicates
Q.6
Electrostatic instruments are normally used for
Q.7
Which wave has the least form factor?
Q.8
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
Q.9
The two pressure coils of a single phase power factor meter have
Q.10
To measure the flux, devices used are based on
Q.11
A megger is usually
Q.12
A megger is usually
Q.13
The multiplier and the meter coil in a voltmeter are in
Q.14
A resistor of 10kΩhms with 5% tolerance is connected in parallel with a 5kΩhms resistor of 10% tolerance. What is the tolerance limit for the parallel network?
Q.15
Ryall crest voltmeter is used for measurement of
Q.16
Direct method is used to measure
Q.17
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are
Q.18
No eddy current and hysteresis losses occur in
Q.19
The absolute measurement of resistance is done by
Q.20
Ampere is one of the
Q.21
The internal resistance of an ammeter should be
Q.22
A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads
Q.23
For handling greater currents induction watt-meters are used in conjunction with
Q.24
When using ohmmeter, applied voltage is to be disconnected from the circuit because
Q.25
The resistance can be measured most accurately by
Q.26
In a ballistic galvanometer, the deflecting torque is proportional to
Q.27
For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging
Q.28
A 10MHz CRO has
Q.29
A CRO can display
Q.30
A galvanometer has
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