MCQ Questions Civil Engineering Applied Mechanics and Graphic Statics
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MCQ Questions Civil Engineering Applied Mechanics and Graphic Statics - Set - 4
Question 1:
A particle moves in a straight line and its position is defined by the equation x = 6 t2 – t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is
a) 6 m/sec
b) 12 m/sec
c) 24 m/sec
d) 48 m/sec
Correct Answer – (B)
Question 2 :
If the angular distance, 0 = 2t3 – 3t2, the angular acceleration at t = 1 sec. is
a) 1 rad/sec2
b) 4 rad/sec2
c) 6 rad/sec2
d) 12 rad/sec2
Correct Answer – (C)
Question 3 :
A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is
a) less than (1/3) tan 0
b) less than (2/3) tan 0
c) less than (1/3) sin 6
d) less than (2/3) sin 6
Correct Answer – (A)
Question 4 :
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is
a) (1/3) g sinB
b) (2/3) g cos 9
c) (2/3) g sin 0
d) g sin 9
where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal
Correct Answer – (C)
Question 5 :
Williot-Mohr diagram is used to determine deflection in
a) trusses only
b) beam only
c) rigid frames only
d) any type of structure
Correct Answer – (A)
MCQ Questions Civil Engineering Applied Mechanics and Graphic Statics
Question 6:
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is
a) n rpm
b) n/2 rpm
c) n/4 rpm
d) 2n rpm
Correct Answer – (B)
Question 7:
Rate of change of angular momentum is equal to
a) force
b) torque
c) linear momentum
d) impulse
Correct Answer – (B)
Question 8:
A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is
a) (1/3) g sin0
b) (2/5) g sin 0
c) (3/7) g sin 0
d) (5/7) g sin0
where g is acceleration due to gravity
Correct Answer – (D)
Question 9:
A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is
a) 2 J
b) 4 J
c) 6 J
d) 8 J
Correct Answer – (B)
Question 10:
A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first ?
a) sphere with greater rotational energy at bottom than cylinder
b) sphere with lesser rotational energy at bottom than cylinder
c) cylinder with greater rotational energy at bottom than sphere
d) both reach the bottom simultaneously with equal rotational energy at bottom
Correct Answer – (B)
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