# Electrical measurements/Electrical Measurement MCQ Question Set 12 Sample Test,Sample questions

## Question: ` A CRO can display ____`

1.AC signals

2. DC signals

3.Both AC and DC signals

4. Time-invariant signals

## Question: ` A CRO canâ€™t be used in transmission lines.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: ` An oscilloscope with 20 to 50 GHz needs a slow speed.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: ` CRO is used in a radar for ______`

1.studying the pattern of flights

2.visualizing a target

3. measuring voltage

4.determining the distance between source and destination

1.10 ways

2.8 ways

3.4 ways

4.2 ways

1.not flexible

2. rigid

3.less flexible

4.more flexible

## Question: ` How is the data displayed?`

1.through a screen

2.through a computer

3.through an FPGA

4.through a microprocessor

## Question: ` How is the waveform adjusted?`

1. by adjusting the voltage

2.through shift controls

3. by reducing the current

4.by means of a galvanometer

1.3

2.6

3.2

4.4

1. 0.01 s

2. 0.05 s

3. 0.1 s

4.1 s

## Question: ` In medical applications CRO can be used for ______`

1. measuring the heart beats

2.monitoring the brain

3. improving the nervous system functioning

4.displaying cardiograms

1. fs/4

2.fs/8

3.2fs

4.fs

1.ten

2.five

3. two

4.one

## Question: ` In which method of acquisition, pretrigger event is lost?`

1.Real time sampling

2.Random repetitive sampling

3.Sequential repetitive sampling

4.Analog Sampling

## Question: ` Signal conditioner is used for _____`

1. attenuating the voltage

2.maintaining a constant voltage

3.keeping the voltage zero

4.boosting the voltage

## Question: ` The stored image can be displayed ______`

1.for a limited time

2. for infinite time

3.for zero time

4. for an intermediate time

## Question: ` To the Y input of a CRO, we feed a signal defined by 10sin100t, to the X-input, we feed signal 10cos100t. The gain for both X channel and Y channel is the same, the screen will show?`

1. Sinusoidal signal

2.A straight line

3. An ellipse

4.A circle

## Question: `A CRO is used in check _____`

1.op amps

2.resistors

3.voltage

4.capacitance, inductance and diodes

## Question: `A CRO is used in labs for _____`

1. frequency measurement

2.voltage measurement

3. current measurement

4.resistance measurement

## Question: `A CRO uses ______`

1.Electromagnetic focusing

2.Electrostatic focusing

3.Both Electrostatic and Electromagnetic focusing

4.No focusing technique

## Question: `A data acquisition system provides _______`

1. partial communication

2. ineffective communication

3.effective communication

4.complete communication

1. 3 modes

2.2 modes

3. 4 modes

4.5 modes

## Question: `A multiplexer is used for ______`

1. accepting multiple inputs

2.accepting single input

3.accepting multiple outputs

4.accepting single output

## Question: `A recorder is a device ____`

1.An indicating instrument which displays a time-varying signal

2.Whose function is to record the value of the quantity as it is being measured

3.Which records electrical and non-electrical quantities or relates two signals to each other as a function of time

4.Which records the value of the quantity measured as well as the electrical and non-electrical quantities as a function of time

1.1

2.nm/2

3. 2nm

4. nm

1. op amps

2.sensors

3.rectifiers

4.transistors

## Question: `An oscilloscope indicates ________`

1.The peak to peak value of the voltage

2.DC value of the voltage

3.Rms value

4.Average value

## Question: `Analog computers have _______`

1. zero cost

2.intermediate cost

3.more cost

4. less cost

## Question: `By making use of a CRO _____`

1.many characteristics of a signal can be measured

2.only a few characteristics of a signal can be measured

3. no characteristics of a signal can be measured

4. signal can only be displayed

## Question: `CRO is used for many purposes in the industry.`

1.True

2. False

3.all of the above

4.None of the mentioned

## Question: `CRO is used for measurement of _______`

1. AC as well as DC current

2.AC current only

3.DC current only

4. AC power only

## Question: `CRO is voltage measuring device.`

1. True

2.False

3.all of the above

4.None of the mentioned

## Question: `Curve tracers use CRO in _____`

1.diodes

2. passive devices

3. active devices

4.op amps

1.2 types

2.4 types

3.6 types

4.8 types

## Question: `How is error in measurement reduced?`

1.using r.m.s value

2.using absolute value

3.using peak to peak value

4.using a voltmeter

## Question: `How is frequency related to time period?`

1. square proportional

2. not related

3.directly proportional

4. inversely proportional

## Question: `In radio applications, CRO is used for measuring ____`

1. audio frequency range

2.a narrow range of frequencies

3. a wide range of frequencies

4. radio frequency range

## Question: `In Real time sampling, bandwidth is limited.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `Modern electronic instrumentation system is not complex.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `Multiplexers are used when the distance between source and destination is less.`

1.True

2. False

3.all of the above

4.None of the mentioned

1. CRO

2.plotter

3. recorder

4. voltmeter

## Question: `Period of a waveform is obtained by which of the following relation?`

1. T = number of divisions occupied by 1 cycleÃ—(time)

2.T = number of divisions occupied by 1 cycleÃ—(1â„division)

3. T = number of divisions occupied by 1 cycleÃ—(timeâ„division)

4.T = number of divisions occupied by 1 cycle

1.low

2.high

3. medium

4. zero

## Question: `Sensors produce frequency which is counted by ______`

1. a chemical counter

2.a mechanical counter

3.an electronic counter

4. a basic counter

1.D/A converter

2.Oscillator

3.A/D converter

4.Rectifier

## Question: `The data acquisition system can have any speed.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `The data acquisition system implies input data collection ______`

1. in mixed signal form

2.in analog form

3. in digital form

4.in the form of binary codes

## Question: `The source of emission of electrons in a circuit is ________`

1.p-n junction diode

2.a barium and strontium oxide coated cathode

3.accelerating anode

4.post-accelerating anode

## Question: `The two inputs of a CRO are fed with two stationary periodic signals. The figure changes from ellipse to circle and back to ellipse with its major axis changing orientation slowly and repeatedly. The following inference can be made from this.`

1.The signals are not sinusoidal in nature

2.The amplitudes of the signals are very close but not equal

3. The signals are sinusoidal with their frequencies very close but not equal

4.There is a constant but small phase difference between the signals

## Question: `Transducer is used to convert a _______`

1. physical quantity into an electrical signal

2.electrical signal into a physical quantity

3. physical quantity into a mechanical quantity

4.physical quantity into a chemical quantity

## Question: `Transducer produces a _______`

1.proportional current

2.proportional voltage

3.proportional resistance

4.proportional power

## Question: `What is a data acquisition system?`

1.system used for data processing, conversion and transmission

2. accepts data as an input

3. removes noise

4.boosts the signal

## Question: `What plays an important role in Real time sampling?`

1.small memory and fast sampling

2.large memory and slow sampling

3. large memory and fast sampling

4.small memory and slow sampling

1.multi trace

2.dual trace

3.modern

4.conventional

## Question: `X and Y plates of a CRO are connected to unequal voltages of equal frequency with phase shift of 90Â°. The Lissajous figure on the screen will be?`

1.Circle

2.Straight line

3.Ellipse

4.Figure of eight

## More MCQS

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