Civil Engineering MCQs

Page No. 157

Instantaneous center is at infinity when the angular velocity is _________________?


aconstant

✖


bzero

✓


cmaximum

✖


dminimum

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View Answer zero

A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ?


a 1.0 in from the wall

✖


b 1.732 m from the wall

✖


c1.732 m above the floor

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dB and C

✓


View Answer B and C

The angle of projection at which the horizontal range and maximum height of a projectile are equal to_____________________?


a36°

✖


b45°

✖


c56°

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d76°

✓


View Answer 76°

A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in________________?


a 5 sec

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b8 sec

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c10 sec

✓


d20 se

✖


View Answer 10 sec

If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?


azero

✖


bmaximum

✓


cminimum

✖


dunpredictable

✖


View Answer maximum

The angle of projection at which the horizontal range and maximum height of a projectile are equal to___________________?


a45°

✖


btan-1 (2)

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ctan-‘ (4)

✓


dtan”1 (1/4)

✖


View Answer tan-‘ (4)

In a simple harmonic motion, the position of equilibrium is always_________________?


astable

✓


bunstable

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cneutral

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dnone of the above

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View Answer stable

The time period of a simple pendulum depends on__________________?


amass of suspended particle

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b length of the pendulum

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cacceleration due to gravity

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dA and C

✓


View Answer A and C

The maximum displacement of a particle executing S.H.M. corresponds to__________________?


azero potential energy and maximum kinetic energy

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bzero kinetic energy and maximum potential energy

✓


cmaximum kinetic energy and maxi-mum potential energy

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dminimum kinetic energy and minimum potential energy

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A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________?


a E

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b E/2

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c2E

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d4E

✓


View Answer 4E

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