Electrical and Electronics Measurements and Instrumentation Online Test 1 – Randomized MCQs

With each visit of this Electrical and Electronics Measurements and Instrumentation online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.

Test Instructions
Question type	Randomized MCQs.Changes every time you visit the test
Total Number of Questions	30
Time Limit	20 Minutes
Points	1 Point for each Question

Remaining Time: 0 MINUTES

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Question 1 of 30

Q-1.The residues of a resistor at high frequencies are :

Interturn capacitance

Inductance

Ground capacitance

All of the above

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.A pressure gauge is calibrated form 0–50 kN/m2. It has a uniform scale with 100 scale divisions. One fifth of the scale division can be read with certainty. The gauge has a

dead zone of 0.2 kN/m2

resolution of 0.1 kN/m2

resolution of 0.5 kN/m2

threshold of 0.1 kN/m2

Your Answer:Correct

Your Answer:Incorrect

Question 3 of 30

Q-3.A 1 mA ammeter has a resistance of 100 Ω.it is to be converted to a 1 A ammeter. The value of shunt resistance is :

0.001 Ω

0.1001 Ω

100000 Ω

100 Ω

Your Answer:Correct

Your Answer:Incorrect

Question 4 of 30

Q-4.A strain gauge with a resistance of 250 Ω undergoes a change of 0.150 Ω during a test. The strain is 1.5 × 10-4. Then the gauge factor is

100

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5.LVDT can be used for

angular velocity measurement of a column

load measurement

vibration measurement

force measurement in a beam

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.Transistor voltmeter

cannot measure ac voltage

cannot measure high frequency voltage

cannot be designed to measure resistance as well as voltage

can measure ac voltage

Your Answer:Correct

Your Answer:Incorrect

Question 7 of 30

Q-7.A 100 Ω resistive potentiometer is used with an input supply voltage of 10 V. the temperature of the POT is of the thermal resistance 30°C/W and the ambient temperature is 40°C

60°C

80°C

70°C

100°C

Your Answer:Correct

Your Answer:Incorrect

Question 8 of 30

Q-8.A Reynold’s number of 1000 indicates

Turbulent flow

Laminar flow

A flow which can be either turbulent or laminar

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.The function of notch filter is

pass high frequency signal

pass a particular band of signal

pass low frequency signal

none of these

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.if the confidence level is 0.95, then the value lying outside the confidence interval are:

1 in 5

1 in 20

1 in 100

1 in 1000.

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.The symbole nm stands for :

newton metre

nano metre

nano milli

number of moles.

Your Answer:Correct

Your Answer:Incorrect

Question 12 of 30

Q-12.Screw adjustments are preferred over shunt resistance adjustments for zero calibration in ohmmeters because

the former method is less costly

the former method does not disturb the scale calibration

the former method does not disturb the meter magnetic field

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 13 of 30

Q-13.In a digital storage oscilloscope, the input signals are

Directly applied to the oscilloscope

Multiplexed, converted to digital form and stored and applied to oscilloscope

Multiplexed, converted to digital form stored, converted to analog form and applied to oscilloscope

Applied to amplifier, stored as analog signals, multiplexed, converted to digital form, converted to analog form, and applied to CRO through an amplifier.

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.A moving iron instrument can be used for current and voltage measurements

In a.c circuits only

In d.c circuits only

In both a.c and d.c circuits for any value of frequency (in case of a.c circuits)

In both a.c and d.c circuits for frequencies up to about 125 Hz (in case of a.c circuits).

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.This is not a digital modulation technique:

Amplitude shift keying

Phase shift keying

Frequency shift keying

Pulse shift keying

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.The electrical zero of a synchro-transformer is

Displaced by an angle 180° from the zero of a syncro-transmitter

Displaced by an angle 90° from the zero of a syncro-transmitter

Displaced by an angle 0° from the zero of the transmitter

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.A double beam oscilloscope has

two screens

two electron guns

two different phosphor coatings

one waveform divided into two parts

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.A Coordinate type potentiometer is used for determination of impedance of a coil and the results obtained are: voltage across 1Ω resistance in series with coil, 0.24 V on in phase dial and -0.09 on quadrature dial.The resistance of the coil is:

9.14 Ω

2.34 Ω

16.76 Ω

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.A capacitor is connected across a portion of resistance of the multiplier in order to make the pressure coil circuit non-inductive. The value of resistance is r while the total resistance and inductance of pressure circuit are respectively R_p and L.The value of capacitor C is:

0.41L/r²

0.41L/(R_p)²

L/(R_p)²

L/r²

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.Spring-controlled moving-iron instruments exhibit a square law response resulting in a non-linear scale. The shape of the scale can be made almost linear by

keeping rate of change of inductance, L, with deflection, θ, as constant

keeping 1/∅ dL/(d∅) as constant

keeping ∅ dL/(d∅)as constant

keeping 1/(k∅) as constant, where k is the spring constant

Your Answer:Correct

Your Answer:Incorrect

Question 21 of 30

Q-21.X-Y recorders

Record one quantity with respect to another quantity

Record one quantity on x- axis with respect to time on Y-axis

Record one quantity on Y-axis with respect to time on X-axis

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 22 of 30

Q-22.In an oscilloscope, when the unknown the unknown signals applied to the vertical plates is being synchronized with the sweep signal applied to horizontal plates, the pattern seen on the CRO screen moves towards the right. It means that,

The frequency of the signal is lower than that of the sweep signal

The frequency of the signal is greater than that of the sweep signal

The frequency of the signal is equal to the frequency of the sweep signal

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.In strain gauge torque transducers, the strain gauges should be mounted at

0° to the shaft axis

At 45° to the shaft axis

90° to the shaft axis

60° to the shaft axis

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.A.C transmission lines and cables are tested by using d.c

They may be used for d.c if required

They draw high values of charging current and hence would require a large sized h.v transformer if tested with a.c

H.v testing transformers cannot be used for long times that required for testing

All the above.

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25.Which of the following measures the magnetic flux density?

Ballistic galvanometer

Grassot fluxmeter

Permeameter

All of the above

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.The advantage of Hay’s bridge over Maxwell’s inductance–capacitance bridge is that

its final balance equations are independent of frequency

it reduces cost by not making capacitor or inductor as the variable parameters

it can be used measuring low Q inductors

it can be used measuring high Q inductors

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.The desirable properties of a laser bean are :

It has high radiant energy

It can be polarized

It is monochromatic and coherent

All the above.

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.The Q factor of a coil at the resonant frequency 1.5MHz of an RLC series circuit is 150. The bandwidth is :

225 MHz

1.06 MHz

10KHz

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.The controlling torque in single phase power factor meter is provided by :

Spring control

Gravity control

Stiffness of suspension

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.Accelerated ageing is done on coils for standard resistors in order to :

Make the resistance stable with time

Reduce inductive and capacitive effects

Reduce hot spot temperatures

None of the above

Your Answer:Correct

Your Answer:Incorrect

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