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Online Tests
Physics ECAT Pre Engineering Chapter 4 Work and Energy Online Test MCQs With Answers
Question # 1
Work done is maximum when angle between force and displacement is:
Choose an answer
0
°
90
°
180
°
None of these
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Question # 2
A solar cell converts energy of the Sun into:
Choose an answer
Heat energy
Magnetic energy
Light energy
Sound energy
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Question # 3
The power of an electric generating station is expressed in:
Choose an answer
Kilo Jule
Kilowatt-hour
Kilo watt
Watt
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Question # 4
Work is always done on a body when:
Choose an answer
A force acts on it
It moves through certain distance
None of A and B is correct
Both A and B is correct
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Question # 5
Which of the following type of force can do no work on the particle on which it acts:
Choose an answer
Frictional force
Gravitational force
Electric force
Centripetal force
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Question # 6
Work is a scalar product of
Choose an answer
Force, Velocity
Velocity, Displacement
Force, Displacement
Force, Momentum
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Question # 7
The energy stored int he water of the dam is:
Choose an answer
Electric energy
Kinetic energy
Potential energy
None of these
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Question # 8
The tidal energy is produced due to rotation of Earth relative to:
Choose an answer
Moon
Sun
Oceans
Water
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Question # 9
The work done by a force, keeping an object in circular motion with constant speed is:
Choose an answer
Zero J
1 J
0.1 J
0.01 J
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Question # 10
The field in which work done in moving a body between two points depends upon the path followed is called:
Choose an answer
Conservative field
Non-conservative field
Electric field
None of these
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Question # 11
Work done is maximum when angle between force and displacement is
Choose an answer
0°
90°
180°
None of these
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Question # 12
Which force is not a conservative force:
Choose an answer
Frictional force
Gravitational force
Electric force
Elastic spring force
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Question # 13
The value of escape velocity of Earth planet comes out to be:
Choose an answer
11 m/sec
11 km/sec
11 km/hour
11 cm/sec
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Question # 14
When a wall is pushed by a person very strongly, he has done:
Choose an answer
Maximum work
Zero work
Positive work
Negative work
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Question # 15
In the force applied is parallel to the direction of motion, then work done is:
Choose an answer
Maximum
Minimum
Zero
None of these
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Question # 16
The dimensions of work
Choose an answer
[MLT
-1
]
[MLT
-2
]
[ML
2
T
-2
]
[MLT]
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