200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
1.For measurement of inductance having high value, we should use
- AMaxwell?s bridge
- BMaxwell Wein bridge
- CHay?s bridge
- DAny of the above
2.If the current in a capacitor leads the voltage by 80 degree, the loss angle of the capacitor is
- A10 degree
- B80 degree
- C120 degree
- D170 degree
3.In a Schering bridge the potential of the detector above earth potential is
- AA few volts only
- B1 kV
- C5 kV
- D10 kV
4.To avoid the effect of stray magnetic field in AC bridges, we can use
- AMagnetic screening
- BWagner earthing device
- CWave filters
- DAny of the above
5.A power factor meter has
- AOne current circuit and two pressure circuits
- BOne current circuit and one pressure circuit
- CTwo current circuits and one pressure circuit
- DNone of the above
6.The two pressure coils of a single phase power factor meter have
- AThe same dimensions and the same number of turns
- BThe same dimension but different number of turns
- CThe same number of turns but different dimensions
- DNone of the above
7.In a single phase power factor meter, the phase difference between the currents in the two pressure coils is
- AExactly 0 degree
- BApproximately 0 degree
- CExactly 90 degree
- DApproximately 90 degree
8.In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at
- A0 degree
- B60 degree
- C90 degree
- D120 degree
9.In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of
- A0.1 Hz
- B0.25 Hz
- C0.5 Hz
- D1.5 Hz
10.In a Weston frequency meter, the magnetic axes of the two fixed coils are
- AParallel
- BPerpendicular
- CInclined at 60 degree
- DInclined at 120 degree
11.A Weston frequency meter is
- AMoving coil instrument
- BMoving iron instrument
- CDynamometer instrument
- DNone of the above
12.A Weston synchronoscope is a
- AMoving coil instrument
- BMoving iron instrument
- CDynamometer instrument
- DNone of the above
13.In a Weston synchronoscope, the fixed coils are connected across
- ABus-bar
- BIncoming alternator
- CA lamp
- DNone of the above
14.In Weston synchronoscope, the moving coil is connected across
- ABus-bar
- BIncoming alternator
- CFixed coils
- DAny of the above
15.The power factor of a single phase load can be calculated if the instruments available are
- AOne voltmeter and one ammeter
- BOne voltmeter, one ammeter and one wattmeter
- COne voltmeter, one ammeter and one energy meter
- DAny of the above
16.The desirable static characteristics of a measuring system are
- AAccuracy and reproducibility
- BAccuracy, sensitivity and reproducibility
- CDrift and dead zone
- DStatic error
17.The ratio of maximum displacement deviation to full scale deviation of the instrument is called
- AStatic sensitivity
- BDynamic deviation
- CLinearity
- DPrecision or accuracy
18.Systematic errors are
- AInstrumental errors
- BEnvironmental errors
- CObservational errors
- DAll of the above
20.Commonly used standard capacitor is
- ASpherical type
- BConcentric cylindrical type
- CElectrostatic type
- DMultilayer parallel plate type