# Electrical measurements/Electrical Measurement MCQ Question Set 9 Sample Test,Sample questions

## Question: ` ADC gives polarity indication.`

1. True

2. False

3.all of the above

4.All of the Mentioned

## Question: ` Clock pulses are controlled ______`

1.automatically

2.using microcontrollers

3.using valves

4.manually

## Question: ` Feedback voltage is applied to the ________`

1.comparator

2.error amplifier

3.potentiometer

4.sliding contact

1.11.870

2.1.1870

3.118.7

4. 0.1187

## Question: ` How to obtain balance?`

1. by using a detector

2.by changing the pot setting

3.by supplying voltage

4. by using a transformer

## Question: ` In a potentiometric DVM ____`

1.voltage is compared

2.current is compared

3.resistance is compared

4.power is compared

1.resistance

2.capacitance

3.current

4.time-period

## Question: ` Noise rejection is poor.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: ` Old information is used to set range relays.`

1. True

2.False

3.all of the above

4.None of the mentioned

1.mechanical

2. optical

3. electrical

4.analog

## Question: ` Sensitivity of a DVM is given by _______`

1.S = 1

2. S = (fs)min

3. S = (fs)min Ã— R

4.S = R

## Question: ` What is the output voltage in a dual slope integrating type DVM?`

1.differential of the input

2.multiple of the input

3.integral of the input

4.zero

## Question: `A 3 digit display DVM with a maximum reading of 1999 indicates _______`

1.increase by a factor

2. reduction by a factor

3.no change in value

4.depends on the circuit components

## Question: `A practical Q meter consists of ______`

1.Wien bridge oscillator

2.AF oscillator

3.RF oscillator

4.Crystal oscillator

## Question: `A.C. voltages are measured using _______`

1.oscillators and op amps

2.rectifiers and filters

3.resistor and capacitor

4.inductor and resistor

## Question: `Accuracy depends on ______`

1. input voltage

2. drop across the capacitor

3.magnitude and stability of pulse generator

4.magnitude of the ramp

1. zero

2.medium

3. low

4.high

## Question: `ADC counter ________`

1.attenuates the signal

2. converts digital to analog

3.converts analog to digital

4.contains information

## Question: `Analog mulimeters require power supply.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `Autoranging means ______`

1.automatic ranging

2.fixed ranging

3.automobile ranging

4. constant ranging

## Question: `Basic building blocks of digital multimeter are _____`

1. oscillator, amplifier

2.diode, op amp

3.rectifier, schmitt trigger

4.A/D, attenuator, counter

1. Â± 10 V

2.Â± 0.035 V

3.Â± 0.05 V

4. Â± 1 V

## Question: `Current is converted to voltage ______`

1. through a voltmeter

2.through a resistance

3.through an ammeter

4.through a galvanometer

## Question: `Digital multimeter is used for _____`

1.measuring a.c. and d.c. current, voltage and resistance

2.measuring a.c. current and voltage

3.measuring d.c. current and resistance

4.measuring a.c. voltage and resistance

## Question: `For a value less than 0200, the instrument should ________`

1.read values less than 0200 correctly

3.automatically switch range

4.should not respond at all

## Question: `For resistance measurement, meter contains ____`

1.high current source

2. medium current source

3. low current source

4.low voltage source

## Question: `How is the reference voltage obtained?`

1.from a fixed current source

2.from a variable voltage source

3.from a variable current source

4.from a fixed voltage source

## Question: `In a potentiometric DVM, balance is obtained manually.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `Integration period is obtained by ______`

1.using signal amplitude

2.counting the pulse

3.measuring time

4.by differentiating the signal

## Question: `Integratorâ€™s output is ______`

1.attenuated through a filter

2.feedback to the input

3.stored in a flip-flop

4. differentiated

## Question: `Output of the comparator is known as ___`

1.amplified signal

2.error signal

3. feedback signal

4.attenuated signal

## Question: `Q factor is also defined as the ratio of _______`

1.resistance to reactance

2.reactance to resistance

3. power to voltage

4.current to power

## Question: `Q factor is called ______`

1.Quality factor

2.Quantity factor

3.Queen factor

4.Quarter factor

## Question: `Q meter works on the principle of _______`

1.barkhausen criterion

2.piezoelectric effect

3. parallel resonance

4.series resonance

1.D/A converter

2.oscillator

3.amplifier

4.A/D converter

## Question: `Resistance is measured using _____`

1. constant current source

2.constant voltage source

3.variable current source

4. variable voltage source

1. R = 1â„10n

2.R = 1

3. R = 10n

4. R = nâ„10

## Question: `Sensitivity is largest change in input.`

1.True

2.False

3.all of the above

4.None of the mentioned

## Question: `Slider movement depends on ______`

1.current magnitude

2.resistance magnitude

3.voltage magnitude

4.power magnitude

## Question: `Unknown voltage is _____`

1.converted to current

2.boosted

3.filtered

4.measured using a voltmeter

1.voltmeter

2.multimeter

3.thermocouple

4.thermometer

1.quality meter

2.quantity meter

3.instrument

4.detector

1.one

2.ten

3. three

4.zero

## Question: `What is the effect of clock on the voltage?`

1.voltage doubles with clock input

2.voltage halves with clock input

3.no effect

4. voltage becomes zero with clock input

## Question: `What is the effect of the capacitor on the output?`

1.no effect

2.charging effect

3.electrostatic effect

4.magnetic effect

1.9999

2.0

3. 500

4.1000

1.1 %

2.0.1 %

3.0.001 %

4. 10 %

1.1 V

2.0.1 V

3. 0.01 V

4.0.001 V

## Question: `What is the significance of the name dual slope method?`

1. it has two slopes

2.it integrates the input twice

3.it uses two inputs

4.it has two outputs

1.no noise

2. partial noise

3.average noise

4.maximum noise

## More MCQS

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