Electrical measurements/Electrical Measurement MCQ Question Set 8 Sample Test,Sample questions

Question:
 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


Question:
 Accuracy depends on external supply.

1.True

2.False

3.all of the above

4.None of the mentioned


Question:
 Electronic multimeter consists of a rectifier.

1. True

2.False

3.all of the above

4.None of the mentioned


Question:
 Input impedance of a DVM is ______

1.low

2.zero

3.high

4.medium


Question:
 Input voltage is measured by _______

1.using a voltmeter

2.counting pulses

3.using a multimeter

4.using an ammeter


Question:
 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


Question:
 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


Question:
 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


Question:
 Time is measured using ______

1.clock

2. logic gates

3.counter

4. flip-flops


Question:
 What is the role of a rectifier in a multimeter?

1. bias purpose

2.thermal stability

3. rectification

4. inversion


Question:
 Which determines the rate of measurement cycles?

1.oscillator

2.amplifier

3.mutivibrator

4.oscilloscope


Question:
A digital voltmeter reduces parallax error.

1.True

2.False

3.all of the above

4.None of the mentioned


Question:
Accuracy of a DVM is ________

1. low

2.high

3.medium

4.zero


Question:
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


Question:
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


Question:
D/A converter generates the set pattern successively.

1. True

2. False

3.all of the above

4.None of the mentioned


Question:
Digital voltmeters can be used to measure _____

1. voltage only

2.voltage, temperature, pressure, etc

3. voltage and current

4.voltage and resistance


Question:
Digital voltmeters converts ______

1.analog to digital signal

2.digital to analog signal

3.current to voltage

4.resistance to voltage


Question:
DVM has ____

1.1-3 digits

2.2-5 digits

3.3-6 digits

4.7-10 digits


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
Input signal magnitude is limited by _____

1.button

2.resistance

3.attenuator

4.voltage


Question:
Linear ramp technique is based on _____

1.voltage measurement

2. time measurement

3.current measurement

4. resistance measurement


Question:
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


Question:
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


Question:
Multimeter can be used only for low resistance measurement.

1.True

2.False

3.all of the above

4.None of the mentioned


Question:
Normal mode noise can be eliminated through _____

1.attenuation

2.filtering

3.amplification

4. a transformer


Question:
Number of pulses is related to frequency.

1.True

2. False

3.all of the above

4.None of the mentioned


Question:
Output in digital form can’t be used directly.

1.True

2.False

3.all of the above

4.None of the mentioned


Question:
Output of DVM needs ______

1. 4 lines

2.2 lines

3.8 lines

4.16 lines


Question:
Resolution depends on _____

1.frequency

2.resistance

3.voltage

4. current


Question:
Sawtooth pulses enter into a reversible counter.

1.True

2.False

3.all of the above

4.None of the mentioned


Question:
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


Question:
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


Question:
Swing of the ramp is ______

1.±12 V

2.±10 V

3.±8 V

4.±5 V


Question:
User must wait for a stable reading.

1. True

2. False

3.all of the above

4.None of the mentioned


Question:
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


Question:
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


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

1. directly proportional

2.inversely proportional

3.independent

4.square proportional


Question:
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


Question:
What is the main component of an integrating type DVM?

1.diode

2.amplifier

3.op amp

4. oscillator


Question:
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


Question:
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


Question:
When input is positive, then output is?

1. growing exponential signal

2.decaying exponential signal

3.positive going ramp

4.negative going ramp


Question:
Which compares the output in a successive approximation type DVM?

1.op amp

2.diode

3.comparator

4. rectifier


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

1. exponential ramp

2.asymptotic ramp

3.non-linear ramp

4. linear ramp


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