R4RIN – MCQs, Mock Tests | Electrical measurements Electrical Measurement MCQ Question Set 8

Input signal magnitude is limited by _____

1. button
2. resistance
3. attenuator
4. voltage

✅ Correct Answer: 3

Electronic multimeter consists of a rectifier.

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

✅ Correct Answer: 1

Multimeter can be used as an ammeter by ____

1. connecting series resistances
2. making use of a transducer
3. making use of a transformer
4. connecting shunts

✅ Correct Answer: 4

Multimeter can be used for D.C. voltage measurement by _____

1. connecting series resistances
2. connecting shunt resistances
3. connecting star delta resistances
4. using a switch

✅ Correct Answer: 1

Multimeter can be used only for low resistance measurement.

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

✅ Correct Answer: 2

What is the role of a rectifier in a multimeter?

1. bias purpose
2. thermal stability
3. rectification
4. inversion

✅ Correct Answer: 3

What is the initial setting made in a multimeter before it is used for measuring resistance?

1. fine adjustment
2. instrument is open circuited
3. voltage is applied
4. zero adjustment

✅ Correct Answer: 4

Digital voltmeters converts ______

1. analog to digital signal
2. digital to analog signal
3. current to voltage
4. resistance to voltage

✅ Correct Answer: 1

Digital voltmeters can be used to measure _____

1. voltage only
2. voltage, temperature, pressure, etc
3. voltage and current
4. voltage and resistance

✅ Correct Answer: 2

A digital voltmeter reduces parallax error.

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

✅ Correct Answer: 1

In a DVM, a transducer converts ______

1. input to a proportional current
2. input to a proportional power
3. input to a proportional voltage
4. input to a proportional resistance

✅ Correct Answer: 3

In a DVM, a signal conditioning circuit is used _____

1. to bring current to a suitable limit
2. to bring resistance to a suitable limit
3. to bring resistance to s suitable limit
4. to bring voltage to a suitable limit

✅ Correct Answer: 4

Input range of DVM is _____

1. 1 V to 1000 V
2. 0.1 V to 10 V
3. 0.01 V to 1 V
4. 0.001 V to 0.1 V

✅ Correct Answer: 1

Output in digital form can’t be used directly.

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

✅ Correct Answer: 2

What is the effect of IC chips on DVM?

1. increase in cost
2. increase in power
3. reduction in cost
4. increase in size

✅ Correct Answer: 3

Basic range of DVM is _____

1. 1 or 10 V
2. 0.1 or 1 V
3. 10 or 100 V
4. 100 or 1000 V

✅ Correct Answer: 1

Accuracy of a DVM is ________

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

✅ Correct Answer: 2

Input impedance of a DVM is ______

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

✅ Correct Answer: 3

In DVM the common mode rejection noise is eliminated by ______

1. increasing the signal amplitude
2. making use of a resistance
3. using a transformer
4. guarding

✅ Correct Answer: 4

Output of DVM needs ______

1. 4 lines
2. 2 lines
3. 8 lines
4. 16 lines

✅ Correct Answer: 1

Normal mode noise can be eliminated through _____

1. attenuation
2. filtering
3. amplification
4. a transformer

✅ Correct Answer: 2

DVM has ____

1. 1-3 digits
2. 2-5 digits
3. 3-6 digits
4. 7-10 digits

✅ Correct Answer: 3

What is a digitizing circuit?

1. converts digital signal to analog
2. boosts the magnitude of a digital signal
3. attenuates a digital signal
4. converts analog signal to digital

✅ Correct Answer: 4

User must wait for a stable reading.

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

✅ Correct Answer: 2

A successive approximation type DVM makes use _______

1. of a digital divider
2. of an analog divider
3. of an oscillator
4. of a transducer

✅ Correct Answer: 1

Successive approximation type DVM is based on the principle of ______

1. acceleration of an object
2. weight of an object
3. velocity of an object
4. momentum of an object

✅ Correct Answer: 2

Which compares the output in a successive approximation type DVM?

1. op amp
2. diode
3. comparator
4. rectifier

✅ Correct Answer: 3

D/A converter generates the set pattern successively.

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

✅ Correct Answer: 1

What is the role of logic control and sequencer in a successive approximation type DVM?

1. generate analog voltage
2. generate power
3. generate current through resistance
4. generate sequence code

✅ Correct Answer: 4

Resolution of a successive approximation type DVM is given by which of the following relation?

1. R = 1⁄10n
2. R = 1⁄10
3. R =10n
4. R = 10

✅ Correct Answer: 1

Sensitivity of a successive approximation type DVM is given by which of the following relation?

1. S = fsmin
2. S = fsmin × R
3. S = R
4. S = fsmin ⁄ R

✅ Correct Answer: 2

Speed of a successive approximation type DVM can be improved by making use of ______

1. electrical switches
2. mechanical devices
3. solid state devices
4. transformers

✅ Correct Answer: 3

Accuracy depends on external supply.

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

✅ Correct Answer: 2

Ramp type DVM uses ______

1. a linear ramp technique
2. a non-linear ramp technique
3. an exponential ramp technique
4. an asymptotic ramp technique

✅ Correct Answer: 1

Linear ramp technique is based on _____

1. voltage measurement
2. time measurement
3. current measurement
4. resistance measurement

✅ Correct Answer: 2

Time is measured using ______

1. clock
2. logic gates
3. counter
4. flip-flops

✅ Correct Answer: 3

Which is the main device used in the linear ramp technique?

1. exponential ramp
2. asymptotic ramp
3. non-linear ramp
4. linear ramp

✅ Correct Answer: 4

Resolution depends on _____

1. frequency
2. resistance
3. voltage
4. current

✅ Correct Answer: 1

How is input voltage measured?

1. by using a voltmeter
2. by counting the pulses
3. by using a multimeter
4. by using a transformer

✅ Correct Answer: 2

Which determines the rate of measurement cycles?

1. oscillator
2. amplifier
3. mutivibrator
4. oscilloscope

✅ Correct Answer: 3

What is the typical value of the multivibrator?

1. 10 cycles/second
2. 0.2 cycles/second
3. 50 cycles/second
4. 5 cycles/second

✅ Correct Answer: 4

Swing of the ramp is ______

1. ±12 V
2. ±10 V
3. ±8 V
4. ±5 V

✅ Correct Answer: 1

In a voltage to frequency converter type integrated DVM _____

1. voltage is converted to time
2. voltage is converted to frequency
3. frequency is converted to voltage
4. frequency is converted to time

✅ Correct Answer: 1

Input voltage is measured by _______

1. using a voltmeter
2. counting pulses
3. using a multimeter
4. using an ammeter

✅ Correct Answer: 2

What is the main component of an integrating type DVM?

1. diode
2. amplifier
3. op amp
4. oscillator

✅ Correct Answer: 3

When input is positive, then output is?

1. growing exponential signal
2. decaying exponential signal
3. positive going ramp
4. negative going ramp

✅ Correct Answer: 4

What is the effect of the input signal on the output teeth?

1. directly proportional
2. inversely proportional
3. independent
4. square proportional

✅ Correct Answer: 1

Sawtooth pulses enter into a reversible counter.

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

✅ Correct Answer: 2

Application of an input voltage generates a ________

1. linear signal at the output
2. ramp at the output
3. exponential signal at the output
4. unit step signal at the output

✅ Correct Answer: 2

Number of pulses is related to frequency.

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

✅ Correct Answer: 1