200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
1.Which of the following instruments cannot be used for the measurement of AC as well as DC quantities?
- AElectrostatic instruments
- BInduction type instruments
- CMoving iron instruments
- DHot wire instruments
2.Which Instrument is free from hysteresis and eddy current errors?
- AElectrostatic
- BMoving iron
- CMoving coil-permanent magnet type
- DMoving coil dynamometer type
3.The readings of a dynamometer type wattmeter can be highly erratic at
- ALow frequencies
- BFluctuating loads
- CLow power factors
- DHigh voltages
4.A dynamometer type wattmeter has
- ASquare law scale
- BNon-linear scale
- CLogarithmic scale
- DUniform scale
5.Which of the following cannot be measured by multimeter?
- AFrequency
- BCurrent
- CVoltage
- DResistance
6.Which Instrument will draw least current from the circuit?
- AHot wire
- BRectifier
- CElectrostatic
- DThermocouple
7.Energy meter installed at the residence of electric power consumers is
- ARecording type instrument
- BIndicating type instrument
- CIndicating as well as recording type instrument
- DNone of the above
8.Which of the following methods is used to shield a dynamometer type wattmeter against stray fields?
- AMeter components are made of non-magnetic materials
- BMeter is housed in a soft iron case
- CNeutral wire connection is provided
- DMeter is earthed
9._____________ type instrument has identical calibration for AC as well as DC values?
- AHot wire
- BMoving coil
- CInduction
- DMoving iron
10.___________ type instrument can have full scale deflection of 300 degrees.
- AInduction
- BRectifier
- CHot wire
- DNone of the above
11.A potentiometer works on
- AHeating effect
- BMagnetic effect
- CElectromagnetic induction
- DNone of the above
12.Schering bridge is used to
- ADetermine dielectric loss and capacitance.
- BMeasure low resistance.
- CDetermine incremental inductance.
- DMeasure mutual inductance.
13.Schering bridge can be used to measure
- ACapacitance and its power factor
- BInductance and its Q-value.
- CQ of a coil.
- DVery small resistance.
14.A wattmeter will be free from the effects of power factor and frequency variations in case
- AVoltage coil resistance is zero
- BDamping is not provided
- CPressure coil inductance is zero
- DA capacitance is connected in parallel to pressure coil
15.__________ will always indicate true RMS value in respective of the wave form?
- ADigital voltmeter
- BThermocouple meter
- CMoving iron meter
- DNone of the above
16.___________ method is suitable for the measurement of a resistance of expected value less than one ohm.
- ASubstitution
- BLoss of charge
- CWheatstone bridge
- DKelvin?s double bridge
17.Which bridge is preferred for the measurement of inductance having high Q-factor?
- AOwen
- BHay
- CMaxwell
- DDesauty
18.Q-meter is used to measure
- ALosses in a capacitor
- BFrequency
- CAccurate value of electrical quantities
- DElectrical Properties of the coils
19.The meter constant of single phase energy meter is expressed in
- ARevolutions/kWh
- BkW/kWh
- Camps/kW
- Dvolts/kWh
20.Moving coil and moving iron type instruments can be distinguished by their
- AScale
- BTheir range
- CPointer
- DSize of terminals