Measurement And Instrumentation MCQ Questions & Answers

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Learn Measurement And Instrumentation MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Measurement And Instrumentation MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-2 section-3

Each section contains 100 MCQs on Measurement and Instrumentation .

For a rotameter, which one of the following statements is TRUE?

A) The weight of the float is balanced by the buoyancy and the drag force acting on the float B) The velocity of the fluid remains constant for all positions of the float C) The measurement of volume flow rate of gas is not possible D) The volume flow rate is insensitive to changes in density of the fluid

Discuss

Answer & Solution

Answer: Option A

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In an electro dynamometer, a moving coil has an area A, turn N and carries a current I producing a magnetic flux B. The torque on the moving coil is proportional to

A) I B) I² C) B.I² D) A.N.B.I²

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Answer & Solution

Answer: Option B

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An inductor tunes at 200 kHz with 624 pF capacitor and at 600 kHz with 60.4 pF capacitor. The self capacitance of the inductor would be-

A) 8.05 pF B) 10.05 pF C) 16.10 pF D) 20.10 pF

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Answer & Solution

Answer: Option B

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A 1 m length wire has a resistance of 150 Ω. When it is subjected to strain, its length becomes 1.01 m. The measurement is conducted by a strain gauge whose gauge factor is 2. The change in resistance of the wire is

A) 0.5 Ω B) 1.0 Ω C) 2.0 Ω D) 3.0 Ω

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Answer & Solution

Answer: Option D

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Which of the following transducers requires a high input impedance preamplifier for proper measurements?

A) Thermocouple B) Piezoelectric C) Thermistor D) L.V.D.T.

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Answer & Solution

Answer: Option B

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The values of capacitance and inductance used in the series LCR circuit are 160 pF and 160 µH with the inherent tolerance ±10% in each. Then, the resonance frequency of the circuit is in the range of:

A) 0.8 MHz to 1.2 MHz B) 0.9 MHz to 1.0 MHz C) 0.8 MHz to 1.0 MHz D) 0.9 MHz to 1.2 MHz

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Answer & Solution

Answer: Option B

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Potentiometer can be classified as:

A) Deflection type instrument B) Null type instrument C) Both deflection as well as null type instrument D) None of the above

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Answer & Solution

Answer: Option B

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In S.I system, unit of stress is:

A) kg/cm² B) N C) N/m² D) Watt

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Answer & Solution

Answer: Option C

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If A = 629 ± 8 and B = 131 ± 3, A - B with range of doubt is

A) 498 ± 8 B) 498 ± 4 C) 498 ± 11 D) 498 ± 13

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Answer & Solution

Answer: Option C

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If an induction type energy meter runs fast, it can be slowed down by

A) lag adjustment B) light load adjustment C) by adjusting the position of braking magnet and making it come closer to the centre of the disc D) by adjusting the position of braking magnet and making it move away from the centre of the disc

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Measurement And Instrumentation MCQ Questions & Answers | ECE