Applied Mechanics and Graphic Statics

321. Two shots fired simultaneously from the top and bottom of a vertical tower with elevations of 30° and 45° respectively strike a target simultaneously. If horizontal distance of the target from the tower is 1000 m, the height of the tower is

  1. 350 m
  2. 375 m
  3. 400 m
  4. 425 m

Correct answer: (D)
425 m

322. When a body falls freely under gravitational force, it possesses

  1. Maximum weight
  2. Minimum weight
  3. No weight
  4. No effect on its weight

Correct answer: (C)
No weight

323. When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as

  1. Imaginary work
  2. Negative work
  3. Virtual work
  4. None of these

Correct answer: (C)
Virtual work

324. When a body moves round a fixed axis, it has

  1. A rotary motion
  2. A circular motion
  3. A translatory
  4. A rotary motion and translatory motion

Correct answer: (B)
A circular motion

325. When a body of mass M1 is hanging freely and another of mass M2 lying on a smooth inclined plane(a) are connected by a light index tensile string passing over a smooth pulley, the acceleration of the body of mass M1, will be given by

  1. g(M1 + M2 )/(M1 + M2) m/sec
  2. g(M1 - M2 )/(M1 + M2) m/sec2
  3. g(M2 + M1 )/(M1 + M2) m/sec2
  4. g(M2 × M1 )/(M2 - M1) m/sec2

Correct answer: (B)
g(M1 - M2 )/(M1 + M2) m/sec2

326. Which one of the following laws is not applicable to a simple pendulum?

  1. The time period does not depend on its magnitude
  2. The time period is proportional to its length l
  3. The time period is proportional to l, where l is length
  4. The time period is inversely proportional to g, where g is the acceleration due to gravity

Correct answer: (B)
The time period is proportional to its length l

327. When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are

  1. Straight line and parabola
  2. Straight line and circle
  3. Circle and straight line
  4. Circle and parabola

Correct answer: (C)
Circle and straight line

328. Which of the following represents the state of neutral equilibrium?

  1. A cube resting on one edge
  2. A smooth cylinder lying on a curved surface
  3. A smooth cylinder lying on a convex surface
  4. None of the above

Correct answer: (B)
A smooth cylinder lying on a curved surface

Previous
Page 33 of 33
Next
Copyright © EngineeringMCQ.com