200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
1.In order to get best results, indicating instruments are
- AOverdamped
- BUnderdamped
- CCritically damped
- DDamped slightly less than the critical value
2.The dissipation factor of a capacitor can be measured with
- ASchering bridge
- BGalvanometer
- CPotentiometer
- DCampbell bridge
3.Practically, indicating instruments should be
- AUndamped
- BCritically damped
- COver damped
- DUnder damped
4.In hot wire instruments, the sensing wire is made of
- ACopper-nickel
- BSilver
- CCopper
- DPlatinum-iridium
5.An ammeter can be converted into a voltmeter by connecting
- Aa low resistance in series
- Ba low resistance in parallel
- Ca high resistance in series
- Da high resistance in parallel
6.____________ give the value of the quantity to be measured in terms of the constants of the instruments and their direction only.
- ASecondary instruments
- BRecording instruments
- CAbsolute instruments
- DIntegrating instruments
7.The advantage of moving coil permanent magnet type instrument is
- ANo hysteresis loss
- BLow power consumption
- CEfficient eddy current damping
- DAll of the above
8.A portable instrument is likely to have ____________ damping.
- AEddy current
- BGravitational
- CPneumatic
- DFluid friction
9.A moving iron type ammeter has few turns of thick wire so that
- ASensitivity is high
- BDamping is effective
- CScale is large
- DResistance is less
10.Hot wire instruments read
- AAverage value
- BRMS value
- CPeak value
- DNone of the above
11.Which of the following instruments can be used for measuring 132 kV AC voltage?
- AElectrostatic voltmeter
- BHot wire voltmeter
- CMoving coil voltmeter
- DMoving iron voltmeter
12.In which instruments the deflecting torque depends on the frequency?
- AInduction type
- BHot wire
- CMoving coil
- DMoving iron
13.The commonly used material for thermocouples is
- APlatinum-rhodium
- BChromel-alumel
- CChromel-copper
- DAny of the above
14.Bolometer is used to measure
- AThermal radiations
- BElectrical signals
- COptical inputs
- DTemperature inputs
15.The frequency meter that can be used for the measurement of radio frequency is
- Aheterodoxy frequency meter
- BWeston frequency meter
- CElectrical resonance
- DAny of the above
16.The phenomenon of ?creeping? occurs in
- AAmmeters
- BVoltmeters
- CWattmeters
- DEnergy Meter
17.Highest flux density exists inside which of the following instruments?
- AMoving coil instruments
- BMoving iron instruments
- CHot wire instruments
- DElectrodynamic instruments
18.The ratio error of a current transformer is due to
- ALagging power factor
- BExciting current
- CStray magnetism
- DCorona effects
19.EMF of a Weston cell is accurately measured by
- AElectrostatic voltmeter
- BHot wire voltmeter
- CIsothermal voltmeter
- DElectrodynamic voltmeter
20.Weston cell is a
- AGood standard of voltage
- BGood source of current
- CGood source of power
- DNone of the above