Instrumentation Engineering MCQs (Chapterwise Multiple Choice Questions)

If the refractive indices for the core and cladding of an optical fibre are 1.7 and 1.5 respectively. What would be the acceptance angle of the optical fibre?

53.1 degree

49.1 degree

33.1 degree

38.1 degree

Answer & Explanation

Correct Answer: 53.1 degree

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A 3mA meter having internal resistance of 100 ohm is to be converted to 0-160mA ammeter. What would be the value of the shunt resistance required?

1.911 ohm

1.351 ohm

1.221 ohm

2.121 ohm

Answer & Explanation

Correct Answer: 1.911 ohm

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If a clamper has a capacitor of capacitance, C = 0.02µF and resistance, R=400 KΩ, then what would be the total discharge time for the capacitor?

4 ms

4.5 ms

20 ms

40 ms

Answer & Explanation

Correct Answer: 40 ms

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The inverse Discrete Fourier Transformation of x(n), an N-periodic signal can be expressed as ________.

1

2

3

4

Answer & Explanation

Correct Answer: 3

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To convert a JK flip-flop into a T flip-flop, what would be the input values of J and K?

J=K=0

J=K=1

J=0, K=1

J=1, K=0

None of the above

Answer & Explanation

Correct Answer: J=K=1

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Which of the following gates is a universal gate?

AND gate

XNOR gate

XOR gate

NAND gate

Answer & Explanation

Correct Answer: NAND gate

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An 8-bit digital to analog converter uses BCD input and produces a full-scale output of 9.90 Volt. What would be the analog output for the BCD input 1001 0101?

9.9V

9.5V

8.9V

8.5V

Answer & Explanation

Correct Answer: 9.5V

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Which of the following statements is false about Linear Convolution?

The length of the input sequence can be different.

Zero padding is not required.

Output sequence is non-periodic.

The length of the output sequence will not be greater than the length of input sequences.

None of the above

Answer & Explanation

Correct Answer: The length of the output sequence will not be greater than the length of input sequences.

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If 400 fringes cross the centre of the field of view by moving one mirror through a distance of 0.1347mm in a Michelson Interferometer, then what would be the wavelength of the light?

4323 Å (Angstrom)

5388 Å (Angstrom)

6735 Å (Angstrom)

8321 Å (Angstrom)

Answer & Explanation

Correct Answer: 6735 Å (Angstrom)

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If a sinusoidal wave of angular frequency 1400 rad/s applied to the Y-Y plates of a Cathode Ray Oscilloscope produces six horizontal tangent points and five vertical tangent points, then what would be the frequency of the sinusoidal waveform applied to the X-X plates?

1680 rad/s

1750 rad/s

1820 rad/s

1875 rad/s

Answer & Explanation

Correct Answer: 1680 rad/s

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MCQ on Basic Instrumentation Engineering	MCQ on CSC (Control Systems something)
MCQ on Digital Control Systems	MCQ on Microprocessor
General Instrumentation Engineering MCQs