200 Important Measurement and instrumentation MCQ Question and Answer | PDF Free Download
1.The EMF of a Weston standard cell can be measured by
- APotentiometer
- BGalvanometer
- CHot wire voltmeter
- DElectrodynamometer type volt-meter
2.The temperature of a furnace can be measured by
- ABimetallic thermometer
- BMercury thermometer
- CClinical thermometer
- DOptical pyrometer
3.Permanent magnets used in instruments are generally made of
- AStainless steel
- BAlnico
- CY-alloy
- DCast iron
4.Which of the following resistance is shown by a needle in a meggar not in operation?
- AZero ohm
- B500 ohm
- C1000 ohm
- DInfinity
5.Which type of voltmeter has the least power consumption?
- AElectrostatic type
- BHot wire type
- CInduction type
- DMoving iron attraction type
6.For protecting a galvanometer during transport
- AA capacitor is connected across the terminals
- BThe terminals are kept shorted
- CThe terminals are kept open circuited
- DCritical damping resistance is connected across the terminals
7.The internal resistance of a voltmeter must be very high so that
- AMinimum current passes through the meter
- BRange is high
- CAccuracy is high
- DLoading effect is maximum
8.Which bridge is used for the precise measurement of inductances over a wide range?
- AHay?s
- BWien?s
- CAnderson
- DMaxwell
9.Which of the following bridges is used to measure power factor?
- AWien?s bridge
- BMaxwell bridge
- CSchering bridge
- DKelvin bridge
10.Moving parts of instruments are supported in ___________ bearings.
- AJewelled
- BBall
- CRoller
- DBush
11.A power factor meter has ____________ control springs.
- AOne
- BTwo
- CFour
- DNo
12.The Dead time of an instrument is
- AThe time required by an instrument to begin to respond to a change in the measurand
- BThe time required by an instrument for initial warming up
- CThe largest change of input quantity for which there is no output of the instrument
- DNone of the above
13.In resistance thermometers platinum is used because of
- ALow cost
- BLow cost and high stability
- CLow cost, high stability and wide operating range
- DNone of the above
14.Changes in atmospheric temperature, humidity etc. cause __________ errors.
- ACumulative
- BSystematic
- CEnvironmental
- DInstrumental
15.In electrical measuring instruments, electrical energy is converted to
- AMechanical energy
- BHeat energy
- CChemical energy
- DLight energy
16.Meggar is used to measure
- ABreakdown voltage of insulation
- BEarth resistance
- CInsulation resistance
- DNone of above
17.Voltmeter sensitivity is expressed in
- AOhms per volt
- BReciprocal of full scale deflection current.
- CBoth (a) and (b)
- DNone of the above
18.Control springs in instruments are made up of
- APhosphor bronze
- BCopper
- CSilver
- DSteel
19.In the case of indicating instruments the function of the control spring is
- ATo apply controlling torque
- BTo pass electric current to moving system
- CBoth (a) and (b)
- DNone of the above
20.Torque weight ratio will be least in ___________ instruments.
- ADynamometer
- BMoving iron
- CMoving coil
- DAll above