R4RIN – MCQs, Mock Tests | Electrical measurements Electrical Measurement MCQ Question Set 13

Before and after each test, calibration is carried out.

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

✅ Correct Answer: 1

A/D converter is used for _____

1. converting analog to digital
2. converting digital to analog
3. converting digital to mixed signal mode
4. converting analog to mixed signal mode

✅ Correct Answer: 1

Output of A/D converter is ______

1. given to an analog display
2. given to a digital display
3. given to a CRO
4. given to a voltmeter

✅ Correct Answer: 2

What are auxiliary equipments?

1. equipment
2. guard rings
3. devices
4. voltage source

✅ Correct Answer: 3

What is the main function of auxiliary equipment?

1. unit step response
2. ramp response
3. non-linear response
4. linear response

✅ Correct Answer: 4

What is a digital recorder?

1. records digital data
2. records analog data
3. does not record data
4. records both analog and digital data

✅ Correct Answer: 1

Data acquisition systems are not widely used.

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

✅ Correct Answer: 2

For lower accuracies ______

1. digital acquisition system is used
2. both digital and analog acquisition systems are used
3. analog acquisition system is used
4. mechanical data acquisition system is used

✅ Correct Answer: 3

Digital acquisition systems are used when ____

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

✅ Correct Answer: 4

A single channel data system consists of a signal conditioner, A/D converter and a buffer.

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

✅ Correct Answer: 2

A/D conversion rate is ____

1. variable
2. predefined
3. zero
4. constant

✅ Correct Answer: 2

The buffer output is _____

1. analog
2. zero
3. digital
4. mixed mode

✅ Correct Answer: 3

Which is the best example of a single channel data acquisition system?

1. CPM
2. BPM
3. APM
4. DPM

✅ Correct Answer: 4

Digital outputs are obtained from _______

1. A/D converter
2. D/A converter
3. Oscilloscope
4. Voltage source

✅ Correct Answer: 1

A/D converters can’t be used for low frequency ranges.

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

✅ Correct Answer: 2

Which technique is most widely used in the single channel data acquisition system?

1. Counter type approximation
2. Flash approximation
3. Successive approximation
4. Delta Sigma approximation

✅ Correct Answer: 3

What is pre-amplification?

1. reducing the magnitude of a signal
2. making the magnitude of a signal zero
3. reducing the noise
4. boosting the signal

✅ Correct Answer: 4

How can the input be isolated from the system?

1. using optocouplers
2. using op-amps
3. using a capacitor
4. using rectifiers

✅ Correct Answer: 1

Multichannel data acquisition system has _______

1. multiple channels
2. single channel
3. two channels
4. five channels

✅ Correct Answer: 1

How many types of multiplexed system exist?

1. 2
2. 3
3. 5
4. 10

✅ Correct Answer: 2

Multichannel Analog Multiplexed System is ______

1. very fast
2. fast
3. slow
4. moderate

✅ Correct Answer: 3

Multichannel Analog Multiplexed System utilises time _____

1. using a transformer
2. using a capacitor
3. using a flip-flop
4. using a mux

✅ Correct Answer: 4

In a Multichannel Analog Multiplexed System _______

1. A/D converter is used
2. D/A converter is used
3. Sigma delta converter is used
4. Modulator is used

✅ Correct Answer: 1

In a Multichannel Analog Multiplexed System, data stored in sample and hold circuit is converted into analog form.

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

✅ Correct Answer: 2

Many channels can be monitored at the same time by ________

1. Demultiplexing
2. A/D conversion
3. Multiplexing
4. D/A conversion

✅ Correct Answer: 3

Multiplexing after A/D conversion involves ________

1. noisy data
2. mixed signal data
3. analog data
4. digital data

✅ Correct Answer: 4

Multiplexing after A/D conversion provides immunity to noise.

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

✅ Correct Answer: 2

What led to the development of PC based transducers?

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

✅ Correct Answer: 1

ADD ON card is used for _______

1. to reduce noise
2. communication
3. to boost the magnitude
4. to measure voltage

✅ Correct Answer: 2

PC based data acquisition system displays system parameters _______

1. once in a while
2. intermittently
3. continuously
4. only at specific intervals

✅ Correct Answer: 3

What are MIMIC displays?

1. man-material interface
2. man-made interface
3. man-machine interface
4. man-machine interface

✅ Correct Answer: 4

System parameters are distinguished by physical attributes.

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

✅ Correct Answer: 1

Personal computer does not contain additional hardware in a PC based data acquisition system.

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

✅ Correct Answer: 2

Data analysis hardware is used for _______

1. making the process independent
2. slowing the process
3. fastening the process
4. making the process constant

✅ Correct Answer: 3

Input signal range in a PC based data acquisition system is _______

1. 0.10 mV to 1 V
2. 1 mV to 100 V
3. 5 mV to 5 V
4. 10 mV to 10 V

✅ Correct Answer: 4

Amplified input signal is digitised through ____

1. A/D converters
2. D/A converters
3. Rectifiers
4. Sigma delta modulators

✅ Correct Answer: 1

What is the main objective of process control?

1. to control physical parameters
2. to control mechanical parameters
3. to control optical parameters
4. to control electrical parameters

✅ Correct Answer: 1

What is a process control system?

1. system to keep the parameters at zero value
2. system to maintain the parameters constant
3. system to keep the parameters at highest value
4. system to check the voltage

✅ Correct Answer: 2

Physical parameters change due to ______

1. voltage
2. current
3. internal and external disturbances
4. power

✅ Correct Answer: 3

A process control system consists of ____

1. 10 elements
2. 6 elements
3. 2 elements
4. 4 elements

✅ Correct Answer: 4

For proper feedback in a process control element, it is required to ________

1. measure P
2. measure set point
3. measure error
4. measure comparator

✅ Correct Answer: 1

Feedback path element measure only input parameters.

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

✅ Correct Answer: 2

A transducer converts _____

1. mechanical quantity to electrical form
2. electrical quantity to physical form
3. physical quantity to electrical form
4. chemical quantity to physical form

✅ Correct Answer: 3

An electrical transducer consists of ________

1. 4 parts
2. 6 parts
3. 8 parts
4. 2 parts

✅ Correct Answer: 4

A transducer is part of a large circuit and produces the required output.

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

✅ Correct Answer: 1

How many types of transducers are there?

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

✅ Correct Answer: 1

Mechanical transducers sense ______

1. electrical changes
2. physical changes
3. chemical changes
4. biological changes

✅ Correct Answer: 2

Mechanical transducers generate ________

1. electrical signals
2. chemical signals
3. physical signals
4. biological signals

✅ Correct Answer: 3

Electrical transducers generate _______

1. biological signals
2. chemical signals
3. physical signals
4. electrical signals

✅ Correct Answer: 4

Electrical signals are easy to amplify.

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

✅ Correct Answer: 1