Which of the following standard can be used for defining length?
A.Bar standard
B.End standard
C.Light wave standard
D.Any of the above
E.None of the above
Category: Mechanical Measurements Mcqs
A steel scale is slightly shorter when compared with a standard scale. This type of error is known as
A.natural error
B.systematic error
C.instrumental error
D.None of the above
Which of the following statement is wrong for thermocouple measuring instruments?
A.They read average values
B.They read rms values
C.They cannot take overheads
D.When calibrated on dc they cannot be used for ac signals
E.Their calibration dies not change with time or temperature
In a CRO, ouput from which type of oscillator is applied to the horizontal deflection plate
A.square wave oscillator
B.sinusoidal wave oscillator
C.sawtooth wave oscillator
D.None of the above
Which of the following flow measuring instrument is an area meter?
A.Venturimeter
B.Rotameter
C.Pitot tube
D.Hot wire anemometer
E.None of the above
Under force-current analogy, viscous friction coefficient is considered analogous to
A.Reciprocal of resistance
B.Reciprocal of inductance
C.Reciprocal of capacitance
D.Reciprocal of impedance
E.None of the above
A simple ac amplifier may be used to amplify dc input through use of an additional circuit component known as
A.tuned amplifier
B.carrier
C.chopper
D.None of the above
A hot wire anemometer is a variable
A.Inductance transducer
B.Resistance transducer
C.Capacitance transducer
D.Current transducer
E.Frequency transducer
Venturi tubes are generally made of
A.stainless steel
B.aluminium
C.cast iron
D.phosphor bronze
Which of the following is a non-contact type thermometer?
A.Alcohol thermometer
B.Thermocouple
C.Bimetal strip thermometer
D.Vapour pressure thermometer
E.Optical pyrometer
