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WorksheetsElectronic Measurements & Instruments
Total questions: 14
Worksheet time: 7mins
Which of the following meter is used to measure the relationship between the generator frequencies
Wattmeter
Rotameter
Tachometer
Synchroscope
Which of the following quantities cannot be measured using Multi-Meter:
Resistance
Voltage
Current
Power Factor
In a Circuit, Ammeter should be always connected in ____ arrangement
Series
Parallel
Either in Series or in Parallel
Can be connected in booth
Wattmeter is used to measure which of the following:
Both AC Power and DC Power
DC Power only
AC Power only
Ohm meter is used to measure which of the following quantities:
Reactive Power
Power Factor
Insulation Resistance
Circuit Resistance
Barometer is used to measure air pressure:
True
False
Which of the following meter is used to measure speed in electrical machine
No option is Correct
Tachometer
Rotameter
Synchroscope
Intensity of light is used to measured by which of the following:
Polarimeter
Light meter
Photometer
Lux meter
The deflection θ is related to the electric current I in a galvanometer by the relation
I ∝ θ
I ∝ tan θ
I ∝ sin θ
I ∝ cos θ
A moving coil galvanometer carries a current I and the magnetic field B is radial. The coil has N number of turns and an effective area A. The torque acting on the coil of a moving coil galvanometer is given by
NA2B2I
NABI2
NABI
N2ABI
The sensitivity of a moving coil galvanometer can be increased by decreasing
The number of turns in the coil
The area of the coil
The magnetic field
The couple per unit twist of the suspension
The deflection in moving coil galvanometer is
Inversely proportional to the area of the coil
Directly proportional to the torsional constant
inversely proportional to the current flowing
Directly proportional to the number of turns of the coil
The reason the coil is bound over the metallic frame in moving coil galvanometer is
The metallic frame helps in oscillation
The metallic frame helps in making steady deflection without any oscillation
The metallic frame increases the magnetic field
A current-carrying rectangular coil placed in a uniform magnetic field. In which orientation will the coil rotate?
In any orientation
The magnetic field is parallel to the plane of the coil
The magnetic field is at 450 with the plane of the coil
The magnetic field is perpendicular to the plane
