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MCQs 1: Thermistor is a transducer. Its temperature coefficient is

Negative Positive Zero None of these
Answer Explanation

MCQs 2: Strain gauge is a

Active device and converts mechanical displacement into a change of resistance Passive device and converts electrical displacement into a change of resistance Passive device and converts mechanical displacement into a change of resistance Active device and converts electrical displacement into a change of resistance
Answer Explanation

MCQs 3: Constantan is used for measurement of dynamic strains. It is an alloy of

Constantan is used for measurement of dynamic strains. It is an alloy of Nickel and molybdenum Nickel and chromium Copper and nickel
Answer Explanation

MCQs 4: The linear variable differential transformer transducer is

Inductive transducer Non - inductive transducer Capacitive transducer Resistive transducer
Answer Explanation

MCQs 5: The transducer used for the measurements is / are

Resistance temperature detectors Thermistors Ultrasonic All of these
Answer Explanation

MCQs 6: If the ambient temperature is doubled and pressure fluctuates, then the transmission time of radar through air is

Almost unaffected and remains same Increases Decreases None of these
Answer Explanation

MCQs 7: In radiation methods, the detector system is located

At the top of the liquid filled tank At the bottom of liquid filled tank In middle of the liquid filled tank Outside a liquid filled tank
Answer Explanation

MCQs 8: A vibrating level sensors consist of

One piezoelectric oscillators Two piezoelectric oscillators Three piezoelectric oscillators Four piezoelectric oscillators
Answer Explanation

MCQs 9: The different types of analog recorders are

Graphic recorders Oscillographic recorders Magnetic tape recorders All of these
Answer Explanation

MCQs 10: X - Y recorder is the type of

Graphic recorders Oscillographic recorders Magnetic tape recorders Digital recorders
Answer Explanation

MCQs 11: For a second order instrument if the value of the damping ratio is equal to zero, then the

Output will exhibit constant amplitude oscillation Initially output will be oscillatory and gradually it will die down Initially output will be oscillatory and gradually amplitude of oscillation will increase Output does not exhibit any oscillations
Answer Explanation

MCQs 12: Commercial accelerometer, which is a second order instruments are generally designed for the damping ratio of the range of

0.2 – 0.4 0.6 – 0.8 0.707 – 1 1 – 1.5
Answer Explanation

MCQs 13: The process of measurement

Always disturbs the system being measured It may or may not disturb the system being measured Never disturbs the system being measured None of these
Answer Explanation

MCQs 14: The difference between the measured value and the true value is known as

Relative error Random error Absolute error Systematic error
Answer Explanation

MCQs 15: In the systematic errors, the errors in the output of the measurement system are

All the errors will be positive All the errors will be negative Either all the errors will be positive or all the errors will be negative None of the these
Answer Explanation

MCQs 16: Systematic errors in a measurement system are caused by

System disturbance during measurement Effect of environmental changes Use of uncalibrated instruments All of these
Answer Explanation

MCQs 17: In bridge circuit, the impedance of the instrument measuring the output voltage must be

Equal to the component resistance of the circuit Very large compared to the component resistance of the circuit Very small compared to the component resistance Less than compared to the component resistance but not very small
Answer Explanation

MCQs 18: If the impedance of the instrument measuring the output voltage of the bridge circuit is less than the component resistance then

The instrument will load the bridge circuit The instrument will draw current from the circuit Supply current to the circuit Both (a) & (b) None of the above
Answer Explanation

MCQs 19: In a gravity controlled type indicating instrument, the current flowing through the circuit is

Directly proportional to the cosine of angle of deflection Directly proportional to the sine of angle of deflection Directly proportional to the tan of the angle of deflection Directly proportional to the angle of deflection
Answer Explanation

MCQs 20: The scales of gravity controlled instruments are

Uniform Non - uniform and cramped or crowded at the middle Non - uniform and cramped or crowded at their lower ends Non - uniform and cramped or crowded in the first half
Answer Explanation

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