R4RIN – MCQs, Mock Tests | Electrical measurements Electrical Measurement MCQ Question Set 14

The power needs of electrical transducers is ________

1. maximum
2. minimum
3. zero
4. infinite

✅ Correct Answer: 2

Electrical transducers are _____

1. small and non-portable
2. large and non-portable
3. small and compact
4. large and portable

✅ Correct Answer: 3

Mechanical transducers cause ___

1. power loss
2. hysteresis loss
3. eddy current loss
4. frictional loss

✅ Correct Answer: 4

Electrical transducers are costly.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Active transducers are classified into _________

1. 4 types
2. 2 types
3. 6 types
4. 8 types

✅ Correct Answer: 1

Active transducers develops _________

1. mechanical parameter
2. electrical parameter
3. chemical parameter
4. physical parameter

✅ Correct Answer: 2

How do passive transducers develop electrical signals?

1. using a transformer
2. using internal source
3. using external source
4. using a diode

✅ Correct Answer: 3

Capacitive transduction involves _______

1. change in resistance
2. change in inductance
3. change in resistance
4. change in capacitance

✅ Correct Answer: 4

In electromagnetic based transduction measurand is ______

1. converted into mechanical force
2. converted into electromotive force
3. converted into chemical force
4. converted into physical force

✅ Correct Answer: 2

Inductive transduction involves _______

1. change in self inductance
2. change in capacitance
3. change in mutual inductance
4. change in resistance

✅ Correct Answer: 1

Photovoltaic transduction involves _______

1. voltage generation heat
2. voltage generation through sound
3. voltage generation through light
4. voltage generation current

✅ Correct Answer: 3

Analog transducers convert input into _______

1. voltage
2. current
3. digital
4. analog

✅ Correct Answer: 4

Inverse transducer converts electrical into a physical quantity.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Digital transducers produce analog output.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Accuracy is defined as the closeness that a reading approaches with respect to a standard value.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

The output of a transducer must _______

1. be different at different environment conditions
2. be same at all environment conditions
3. be same at some environment conditions
4. be zero always

✅ Correct Answer: 2

The output of a transducer must be ________

1. low
2. medium
3. high
4. zero

✅ Correct Answer: 3

The size of a transducer must be ______

1. infinite
2. zero
3. large
4. small

✅ Correct Answer: 4

A transducer must be _____

1. quick in response
2. slow in response
3. medium in response
4. very slow in response

✅ Correct Answer: 1

The output of a transducer must ________

1. be less reliable
2. be highly reliable
3. not be reliable
4. be of medium reliability

✅ Correct Answer: 2

The range of a transducer is _______

1. medium
2. narrow
3. large
4. zero

✅ Correct Answer: 3

The transducer output is _______

1. exponential
2. unit step
3. non-linear
4. linear

✅ Correct Answer: 4

The sensitivity of an electrical transducer is obtained by dividing the electrical output with respect to a unit change in the physical quantity.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Selection of a transducer depends on the quantity being measured.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

A transducer must have _______

1. maximum loading
2. minimum loading
3. zero loading
4. infinite loading

✅ Correct Answer: 2

Transducers must operate under _______

1. zero electromagnetic field
2. constant electromagnetic fields
3. varying electromagnetic fields
4. infinite electromagnetic field

✅ Correct Answer: 3

Errors can be minimised in some transducers through ______

1. power compensation
2. voltage compensation
3. resistance compensation
4. temperature compensation

✅ Correct Answer: 4

How can a transducer be used in the environment with vibrations?

1. using shock absorbers
2. using proper grounding
3. using effective voltage
4. using a transformer

✅ Correct Answer: 1

How many passive transducers are there?

1. 1
2. 3
3. 5
4. 7

✅ Correct Answer: 2

Resistance of a metallic conductor is given by _______

1. R = I⁄A
2. R = ρ⁄A
3. R = ρl⁄A
4. R = 1⁄A

✅ Correct Answer: 3

Passive transducers are described with their primary parameters.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Rotational potentiometers use ________

1. capacitance
2. self inductance
3. mutual inductance
4. resistance

✅ Correct Answer: 4

Temperature transducers make use of _____

1. change in resistivity
2. change in length
3. change in area
4. change in capacitance

✅ Correct Answer: 1

Potentiometric resistance transducer measures ______

1. linear displacement
2. rectangular displacement
3. square displacement
4. triangular displacement

✅ Correct Answer: 1

Resistance potentiometer consists of ______

1. capacitive element
2. resistive element
3. inductive element
4. no elements

✅ Correct Answer: 2

Resistance transducer has _____

1. medium efficiency
2. low efficiency
3. high efficiency
4. zero efficiency

✅ Correct Answer: 3

What is a helipot?

1. inductive element
2. helicopter
3. helipad
4. resistive element

✅ Correct Answer: 4

Resistance potentiometers convert mechanical displacement into _____

1. electrical signal
2. chemical signal
3. physical output
4. kinetic energy

✅ Correct Answer: 2

Strain gauge is a _______

1. inductive transducer
2. resistive transducer
3. capacitive transducer
4. mechanical transducer

✅ Correct Answer: 2

Strain is defined as ____

1. change in height per unit height
2. change in weight per unit weight
3. change in length per unit length
4. change in diameter per unit diameter

✅ Correct Answer: 3

Stress is defined as _________

1. diameter per unit area
2. length per unit area
3. weight per unit area
4. force per unit area

✅ Correct Answer: 4

Stress vs strain curve is always linear.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Sensitivity is the smallest value of measurable strain.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Electrical strain gauge works on the principle of ______

1. variation of resistance
2. variation of capacitance
3. variation of inductance
4. variation of area

✅ Correct Answer: 1

The strain gauge is not bonded to the specimen.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Bonding element in a strain gauge must have ____

1. zero insulation resistance
2. low insulation resistance
3. high insulation resistance
4. infinite insulation resistance

✅ Correct Answer: 3

Dynamic strain measurements use ______

1. brass iron alloy
2. iron aluminium alloy
3. nickel cadmium alloy
4. nickel chromium alloy

✅ Correct Answer: 4

Commonly used elements for wire strain gauges are _____

1. nickel and copper
2. nickel and gold
3. gold and brass
4. silver and aluminium

✅ Correct Answer: 1

Cement is classified under _____

1. 4 types
2. 2 types
3. 6 types
4. 8 types

✅ Correct Answer: 2

Proper functioning of a strain gauge depends on _____

1. strain
2. stress
3. bonding
4. length of wire

✅ Correct Answer: 3