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Learn AIR FORCE MCQs with answers [Page 1 of Department 41]

M

Mr. Dubey • 51.43K Points
Coach 

1) Direct Current produces a magnetic field similar to a permanent magnet. This magnetic field:

(A) is unidirectional and has a steady magnitude
(B) is unidirectional but its magnitude varies in regular pattern
(C) has steady magnitude but changes direction in regular pattern
(D) changes direction and magnitude in regular pattern
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Correct Answer - Option (A)

Explanation :
A coil or conductor carrying direct current (DC) produces a magnetic field similar to a permanent magnet. The current carried by this conductor is unidirectional and steady i.e. it does not change direction or vary in magnitude with respect to time. Hence, the effect is that of a permanent magnet which simply attracts objects near the coil. However, in case of Alternating current, the magnetic field changes direction, i.e. it becomes negative for the second half of the frequency cycle (50 cycles per second in India). Further, its magnitude varies sinusoidally (curve having a sinewave form) thereby becoming zero at the end of a cycle.

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M

Mr. Dubey • 51.43K Points
Coach 

2) While passing over an obstacle a light ray slightly bends round the corner. The phenomenon is known as__:

(A) Scattering
(B) Polarisation
(C) Diffraction
(D) Refraction
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Correct Answer - Option (C)

Explanation :
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit.

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G

Gaurav Lamba • 2.83K Points
Extraordinary 

3) One word substitution for : 
The part of government which is concerned with making of rules

(A) Court
(B) Tribunal
(C) Bar
(D) Legislature
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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G

Gaurav Lamba • 2.83K Points
Extraordinary 

4) One word substitution for : 
One who believes that all things and events in life are predetermined is a

(A) Fatalist
(B) Puritan
(C) Egoist
(D) Tyrant
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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G

Gaurav Lamba • 2.83K Points
Extraordinary 

9) One word substitution for : 
Having superior or intellectual interests and tastes

(A) Elite
(B) Highbrow
(C) Sophisticated
(D) Fastidious
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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G

Gaurav Lamba • 2.83K Points
Extraordinary 

10) One word substitution for : 
To cause troops, etc. to spread out in readiness for battle

(A) Disperse
(B) Deploy
(C) Collocate
(D) Align
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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You are learning MCQ Questions of AIR FORCE Department : 41 | Page : 1

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