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
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Question 1 of 30
Q-1.An electrodynamometer type of instruments finds its major use as :
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Question 2 of 30
Q-2.A photoconductive cell may be called as :
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Question 3 of 30
Q-3.An induction motor is rotating at a speed of 1470 rpm. A disc marked with one star is attached to it. A stroboscope flashes light on it at a frequency of 12.5 flashes per second:
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Question 4 of 30
Q-4.The voltage of circuit is measured by a voltmeter having an input impedance comparable with the output impedance of the circuit thereby causing error in voltage measurement. This error may be called
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Question 5 of 30
Q-5.Clamp-on type and split-core type CTs are used because
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Question 6 of 30
Q-6.Incremental counters use
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Question 7 of 30
Q-7.A strip chart recorder is a/an
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Question 8 of 30
Q-8.The advantages of instrument transformers are
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Question 9 of 30
Q-9.An imperfect capacitor is represented by a capacitance Cp , in parallel with a resistance Rp. the value of its dissipation factor (tan δ) is :
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Question 10 of 30
Q-10.A spring produces a controlling torque of 16 × 10-6 Nm for a deflection of 120°. Suppose its width and length are made two times their original value and thickness is halved , the value of controlling torque for the same deflection will be :
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Question 11 of 30
Q-11.A series RLC circuit is used for measurement of inductance of a coil using resonant method. Resonance conditions are produced by varying the capacitance. A thermoelectric type ammeter is used in series with the circuit. Also an electronic voltmeter is connected across the tuning capacitor
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Question 12 of 30
Q-12.Which instrument is the cheapest disregarding the accuracy
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Question 13 of 30
Q-13.Two resistances 100Ω ± 5Ω and 150Ω ± 15Ω are connected in series. If the deviations are standard deviations, the resultant resistance can be expressed as:
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Question 14 of 30
Q-14.Null detection method’ is more accurate than ‘deflection method’ for measurement of unknown resistances because
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Question 15 of 30
Q-15.When measuring cable insulation using a dc source, the galvanometer used is initially short circuited to
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Question 16 of 30
Q-16.The range of an electrostatic voltmeter can be extended by using :
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Question 17 of 30
Q-17.The turn on and turn off times of a LCD are of the order of
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Question 18 of 30
Q-18.The dynamic response of a system is given by the following differential equation :d3 a3 ((d^3 c(t))/(dt^3 )) + a2 ((d^2 c(t))/(dt^2 ))+ a1 (dc(t)/dt) + a0 c(t)= b2 ((d^2 r(t))/(dt^2 ))+ b1 (dr(t)/dt) + b0 r(t) Where c(t) and r(t) are respectively the output and input and a3, a2, a1, a0, b2, b1, b0 are constants. It is a :
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Question 19 of 30
Q-19.A triangular wave can be generated by
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Question 20 of 30
Q-20.Phantom loading for testing of energy meters is used :
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Question 21 of 30
Q-21.When measuring strain, ballast circuits use a capacitor to act as high pass filter. This is done when
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Question 22 of 30
Q-22.Brook’s deflectional potentiometer is used when the unknown voltage :
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Question 23 of 30
Q-23.If an induction type energy meter runs fast, it can be slowed down by :
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Question 24 of 30
Q-24.The response of human eyes under normal light conditions is called
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Question 25 of 30
Q-25.Turns compensation is used in current transformer primarily for reduction of :
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Question 26 of 30
Q-26.High resistances are provided with a guard terminal.This guard terminal is used to :
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Question 27 of 30
Q-27.A vertical amplifier for a CRO can be designed for:
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Question 28 of 30
Q-28.A meggar is used for measurement of
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Question 29 of 30
Q-29.Modem is an acronym of
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Question 30 of 30
Q-30.A spring produces a controlling torque of 16x10-6 Nm for a deflection of 120Y. If the width and length become two times their original values and the thickness is halved, the value of controlling torque for the same deflection will be
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