200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
1.which of the following is not a signal conditioner?
- AAmplifier
- BSignal converter
- CEqualising network
- DDamping network
2.A wave guide acts as a ___________ pass filter
- ALow
- BHigh
- CBand
- DNone of the these
3.Which instrument is used to measure frequency in waveguide?
- AGaliometer
- BKlystron
- CBolometer
- DCavity resonator
4.Which of the following devices may be used to measure accurately the interelectrode capacitances?
- AVTVM
- BDe Santy?s bridge
- CWien?s bridge
- DSchering?s bridge
5.For measuring the resistance of the elements of an attenuator which of the following is the best choice?
- AMaxwell?s bridge
- BMeggar
- COhmmeter
- DWheatstone bridge
6.Which of the following can be measured with the help of piezo-electric crystal?
- AAcceleration
- BTemperature
- CVelocity
- DFlow
7.Which of the following is not an element of electro-pneumatic pressure transmitter.
- AFlapper nozzle mechanism
- BLVDT
- CBellows
- DOperational amplifier
8.Thermistors have ____________ temperature co-efficient.
- ALow and positive
- BHigh and positive
- CLow and negative
- DHigh and negative
9.For thermocouple measuring instruments which of the following statements is incorrect?
- ATheir calibration does not charge with time or temperature
- BThey read RMS values
- CThey are incapable of standing any overloads
- DIf calibrated on DC, they cannot be used for AC signals
10.The cathode of a CRO is usually coated with
- AAlkali metals
- BTungsten or thorium oxide
- CCopper oxide
- DBarium or strontium oxide
11.The input impedance of a CRO is
- AZero
- BAround 100 ohms
- CAround 1000 ohms
- DAround one mega-ohms
12.A CRO can be used to measure
- AAC voltage only
- BDC voltage only
- CFrequency
- DAny of the above
13.A double beam oscilloscope has
- ATwo electron guns
- BTwo screens
- CTwo different phosphor coatings
- DOne wave form divided into two parts
14.Phosphor coating for cathode ray tubes CRT is provided on
- AInside surfaces only
- BOutside surfaces only
- CBoth the surfaces
- DWithin the glass
15.The brightest spot on a cathode ray screen occurs at
- AThe centre
- BThe outer periphery
- CMidway between centre and outer periphery of screen
- DBrightness is same all over the screen
16.For better results a strain gauge should have low
- AResistance value
- BGauge factor
- CResistance temperature co-efficient
- DAll of the above
17.Rosette gauges are used to
- AAmplify strain values
- BMeasure variable strain
- CCompensate for temperature variations
- DMeasure strain in more than one direction
18.A dummy strain gauge is used to
- AImprove the stability of the system
- BCompensate for temperature variations
- CIncrease the sensitivity of measuring system
- DNone of the above
19.The output of LVDT is in the form of
- APulses
- BHigh frequency singles
- CRotary movement of core
- DLinear displacement of core
20.Which of the following is a active transducer?
- AStrain gauge
- BThermocouple
- CLVDT
- DThermistor