…………….are those which do not require an auxiliary power source to produce their output.

The probability of occurrence is stated in terms of……

……………….of an infinite number of data is defined as the square root of the sum of the individual deviation squared divided by the number of readings.

The standard measure of each physical quantity is named as the…..

………………………..of the measuring instrument is the process in which the readings obtained from the instrument are compared with the sub – standards in the laboratory at several points along the scale of the instrument.

…………………….are error introduced by the observer (parallax).

The transducers that converts the input signal into the output signal, which is a discrete function of time is known as ______ transducer.

Which of the following is a digital transducer?

Strain gauge, LVDT and thermocouple are examples of

An inverse transducer is a device which converts

A strain gauge is a passive transducer and is employed for converting

Resolution of a transducer depends on

The sensitivity factor of strain gauge is normally of the order of

Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called

Quartz and Rochelle salt belongs to _______ of piezo-electric materials

Piezo-electric transducers are

Piezo – electric transducers work when we apply ________ to it.

Piezo electric crystal can produce an emf

Which of the following are piezo electric substances?

1. Barium titanate

2. Lead titanate

3. Lead Zirconate

4. Cadmium and sulphate

Choose correct one

LVDT windings are wound on

The size of air cored transducers in comparison to the iron core parts is

The principle of operation of LVDT is based on the variation of

LVDT is an/a _______ transducer

Which of the following can be measured with the help of piezo electric crystal?

S1: Transducer is a device which converts physical into electrical quantity

S2: Transducer is also called as sensor.

In a LVDT, the two secondary voltages

Capacitive transducers are normally employed for_________ measurements

1. EEG A. Diagnostic tool for heart alignment

2. ECG B. Diagnostic tool for brain alignment

3. Sphygmo-manometer C. Instrument used for measuring blood pressure

4. Stethoscope D. instrument used to hear pulse/heart beat

Choose the correct one

Pick the correct statement regarding functions of a transducer

S1: Sense the magnitude, change in & / or frequency of same measurand

S2: To provide electrical output that furnishes accurate, quantitative data about the measurand

The principle of operation of variable resistance transducer is

The application of LVDT is

Pressure transducer for measuring blood pressure is

The change in resistance of a metal wire owing to strain is due to

S1: Change in dimension of wire expressed by factor (1-2µ)

S2: Change in resistance ?

In foil strain gauge the thickness of foil varies from

The capacitance microphone is used for the detection of

Fiber optic sensor can be used to sense _________

The resistance of LDR ______ when exposed to radiant energy.

Giant magnetoresistance is manufactured in the method of

The charge generated per unit force applied is called as

What does a Hall Effect sensor sense?

The frequency response of the microphone depends on

For a material capacitance increases with

If the size of the microphone is decreased, its frequency range will

What is the moving part of a linear variable differential transformer?

Microsyn is based on the principle of

Synchros can be used as ____ sensor

Reluctance of a magnetic circuit is given as ______

A thermometer has a time constant of 3.5sec. if it is taken quickly from a bath having a temperature 0°C and immersed in a water bath having temperature 100°C. What temperature will be indicated after 1.5sec?

A platinum resistance thermometer has a resistance of 120Ω at 250C. Determine the resistance at 750C. The temperature coefficient of resistance is 0.00392 at 250C

……………….. Used for measurement of flow rates of fluids.

……. materials used in humidity sensors.

……………….two modes of operation of hotwire anemometer.

The resistance of thermistor decreases when the temperature increases. This is known as………….

………………. can be defined as the ratio of change in resistance to change in length.

…………….. Metals used in resistance thermometers.

……………………. of the instrument is specified as the difference between the higher and lower limits of recommended input values.

………………. is the closeness with which an instrument reading approaches the true value of the quantity being measured.

………………the ratio of the magnitude of output quantity (response) to the magnitude of input quantity being measured.

……………. of a measurement system are those that are considered when the system or instrument is used to measure a condition varying with respect to time Performance criteria based upon dynamic relation.

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