200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
2.An ohmmeter is a
- AMoving iron instrument
- BMoving coil instrument
- CDynamometer instrument
- DNone of the above
3.For measuring a very high resistance, we should use
- AKelvin?s double bridge
- BWheat stone bridge
- CMeggar
- DNone of the above
4.The electrical power to a megger is provided by
- ABattery
- BPermanent magnet DC generator
- CAC generator
- DAny of the above
5.In a meggar, controlling torque is provided by
- ASpring
- BGravity
- CCoil
- DEddy current
6.The operating voltage of a meggar is about
- A6 V
- B12 V
- C40 V
- D100 V
7.Murray loop test can be used for location of
- AGround fault on a cable
- BShort circuit fault on a cable
- CBoth the ground fault and the short circuit fault
- DNone of the above
8.Which of the following devices should be used for accurate measurement of low DC voltage?
- ASmall range moving coil voltmeter
- BDC potentiometer
- CSmall range thermocouple voltmeter
- DNone of the above
9.It is required to measure the true open circuit emf of a battery. The best device is
- ADC voltmeter
- BAmmeter and a known resistance
- CDC potentiometer
- DNone of the above
10.A voltage of about 200 V can be measured
- ADirectly by a DC potentiometer
- BA DC potentiometer in conjunction with a volt ratio box
- CA DC potentiometer in conjunction with a known resistance
- DNone of the above
11.A direct current can be measured by
- AA DC potentiometer directly
- BA DC potentiometer in conjunction with a standard resistance
- CA DC potentiometer in conjunction with a volt ratio box
- DNone of the above
12.Potentiometer is used for
- AAccurate measurement of emf of a cell or the potential difference (p.d.) between two points of an electric circuit.
- BMeasurement of electrical resistance in the cell
- CMeasurement of electric current in a cell
- DMeasurement of capacitance of cell.
13.To measure a resistance with the help of a potentiometer it is
- ANecessary to standardise the potentiometer
- BNot necessary to standardise the potentiometer
- CNecessary to use a volt ratio box in conjunction with the potentiometer
- DNone of the above
14.A phase shifting transformer is used in conjunction with
- ADC potentiometer
- BDrysdale potentiometer
- CAC co-ordinate potentiometer
- DCrompton potentiometer
15.Basically a potentiometer is a device for
- AComparing two voltages
- BMeasuring a current
- CComparing two currents
- DMeasuring a voltage
16.In order to achieve high accuracy, the slide wire of a potentiometer should be
- AAs long as possible
- BAs short as possible
- CNeither too small not too large
- DVery thick
17.The stator of phase shifting transformer for use in conjunction with an AC potentiometer usually has a
- ASingle-phase winding
- BTwo-phase winding
- CThree-phase winding
- DAny of the above
18.In an Anderson bridge, the unknown inductance is measured in terms of
- AKnown inductance and resistance
- BKnown capacitance and resistance
- CKnown resistance
- DKnown inductance
19.Wagner earthing device is used to eliminate errors due to
- AElectrostatic coupling
- BElectromagnetic coupling
- CBoth (a) and (b)
- DNone of the above
20.For measurement of mutual inductance, we can use
- AAnderson bridge
- BMaxwell?s bridge
- CHeaviside bridge
- DAny of the above