Civil Engineering MCQs

Page No. 157

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


aconstant


bzero


cmaximum


dminimum


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


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°


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


b8 sec


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)


ctan-‘ (4)


dtan”1 (1/4)


View Answer tan-‘ (4)

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


astable


bunstable


cneutral


dnone of the above


View Answer stable

The time period of a simple pendulum depends on__________________?


amass of suspended particle


b length of the pendulum


cacceleration due to gravity


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


bzero kinetic energy and maximum potential energy


cmaximum kinetic energy and maxi-mum potential energy


dminimum kinetic energy and minimum potential energy



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


b E/2


c2E


d4E


View Answer 4E

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