Which of the following instrument is suitable for measuring the temperature of a red hot moving material like molten steel or molten cst iron?
A.Gas thermometer
B.Thermistor
C.Thermocouple
D.Radiation pyrometer
E.All of the above
Category: Mechanical Measurements Mcqs
Which of the following has the number of significant figures other than 3?
A.542 A
B.1.65 V
C.0.346 K?
D.4 x 102
Thermocouples are generally used for temperature measurements upto
A.250?C
B.500?C
C.1000?C
D.1600?C
E.2600?C
In the above problem the thermal time constant will be
A.1 hour
B.1.44 hrs
C.2.05 hrs
D.2.55 hrs
E.3.36 hrs
A tellurometer works on the principle of
A.Optics
B.X-rays
C.Propagation of modulated waves
D.High frequency radio waves
E.Reflection of light
Meter accuracy is determined by
A.Full scale deflection
B.Half scale deflection
C.One fourth scale deflection
D.Least reading possible on the scale
E.Thickness of the pointer
The degree of perfection used in instruments, techniques are observations is known as
A.Accuracy
B.Precision
C.Least Count
D.None of the above
A three digit 0 – 1 V digital voltmeter will have a resolution of
A.1, A
B.1/2 V
C.0.1 V
D.1 mV
E.1
A temperature sensitive transducer is subjected to a sudden temperature change. It takes 18 seconds for the transducer to reach equilibrium condition (five times constant). The time taken by the transducer to read half of the temperature difference will be nearly
A.0.35 second
B.0.69 second
C.0.99 second
D.1.38 second
E.3.92 second
