Civil Graphic Statics MCQ Quiz Questions – Set 21

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Q1. Effect of a force on a body depends upon its

(A) Direction
(B) Magnitude
(C) Position
(D) All the above

Answer: (D) All the above

Q2. If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be

(A) 20 rad/sec
(B) 15 rad/sec
(C) 10 rad/sec
(D) 5 rad/sec

Answer: (D) 5 rad/sec

Q3. The velocity of a body fallen from height ‘h’, on reaching the ground is given by

(A) v = 2gh
(B) v = 2gh2
(C) v = √(2gh)
(D) v = 1/√(2gh)

Answer: (C) v = √(2gh)

Q4. The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is

(A) 64 J
(B) 400 J
(C) 464 J
(D) 89 J

Answer: (C) 464 J

Q5. A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2A, the energy becomes

(A) E
(B) E/2
(C) 2E
(D) 4E

Answer: (D) 4E

Q6. In SI units, the units of force and energy are respectively

(A) Newton and watt
(B) Dyne and erg
(C) Newton and joule
(D) kg wt and joule

Answer:(C) Newton and joule

Q7. A train weighing 196 tonnes experiences a frictional resistance of 511/22 per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

(A) 5 √10 m/sec
(B) 10 √5 m/sec
(C) 5 √3 m/sec
(D) 3 √5 m/sec

Answer: (A) 5 √10 m/sec

Q8. A projectile is fired at an angle ‘θ’ to the vertical. Its horizontal range will be maximum when ‘θ’ is

(A) 0°
(B) 30°
(C) 45°
(D) 90°

Answer: (C) 45°

Q9. The point about which combined motion of rotation and translation of a rigid body takes place, is known as

(A) Virtual centre
(B) Instantaneous centre
(C) Instantaneous axis
(D) Point of rotation

Answer: (B) Instantaneous centre

Q10. The velocity of a moving body, is

(A) A vector quantity
(B) A scalar quantity
(C) A scalar as well as a vector quantity
(D) None of these

Answer: (A) A vector quantity

Q11. The resultant of the forces acting on a body will be zero if the body

(A) Rotates
(B) Moves with variable velocity in a straight line
(C) Moves along a curved path
(D) Does not move at all

Answer: (D) Does not move at all

Q12. For a given velocity of a projectile, the range is maximum when the angle of projection is

(A) 30°
(B) 45°
(C) 90°
(D) 0°

Answer: (B) 45°

Q13. The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

(A) 1 : 2
(B) 1 : 1
(C) 2 : 1
(D) 3 : 1

Answer: (D) 3 : 1

Q14. The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is

(A) Less than 1
(B) Equal to 1
(C) Between 1 and 2
(D) Greater than 2

Answer: (A) Less than 1

Q15. Time of flight of a projectile on a horizontal plane, is

(A) 2u sinα/g
(B) 2u cosα/g
(C) 2u tanα/g
(D) 2u cotα/g

Answer: (A) 2u sinα/g

Applied Mechanics and Graphic Statics MCQ with Answers

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