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MCQs

Total Questions : 1187 | Page 10 of 119 pages
Question 91. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its c.g. and parallel to the base.
  1.     Nine times
  2.     Six times
  3.     Four times
  4.     Two times
 Discuss Question
Answer: Option A. ->  Nine times
Question 92. The periodic time (t) is given by (where, ω = angular velocity of particle in rad/s.)
  1.     ω/2π
  2.     2π/ω
  3.     2π × ω
  4.     π/ω
 Discuss Question
Answer: Option B. ->  2π/ω
Question 93. The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is
  1.     mr²/2
  2.     mr²/4
  3.     mr²/6
  4.     mr²/8
 Discuss Question
Answer: Option A. ->  mr²/2
Question 94. Forces are called coplanar when all of them acting on body lie in
  1.     One point
  2.     One plane
  3.     Different planes
  4.     Perpendicular planes
 Discuss Question
Answer: Option B. ->  One plane
Question 95. The law of the machine is (where p = effort applied to lift the load, m = a constant which is equal to the slope of the line, w = load lifted, and c = another constant which represents the machine friction.)
  1.     P = mW - C
  2.     P = m/W + C
  3.     P = mW + C
  4.     P = C - mW
 Discuss Question
Answer: Option C. ->  P = mW + C
Question 96. The acceleration of a particle moving with simple harmonic motion, at any instant is given by
  1.     ω.y
  2.     ω2.y
  3.     ω2/y
  4.     ω3.y
 Discuss Question
Answer: Option B. ->  ω2.y
Question 97. The range of a projectile is maximum, when the angle of projection is
  1.     30°
  2.     45°
  3.     60°
  4.     90°
 Discuss Question
Answer: Option B. ->  45°
Question 98. The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = height of a right circular solid cone.)
  1.     h/2
  2.     h/3
  3.     h/4
  4.     h/6
 Discuss Question
Answer: Option C. ->  h/4
Question 99. A trolley wire weighs 1.2 kg per meter length. the ends of the wire are attached to two poles 20 meters apart. if the horizontal tension is 1500 kg find the dip in the middle of the span
  1.     2.5 cm
  2.     3.0 cm
  3.     4.0 cm
  4.     5.0 cm
 Discuss Question
Answer: Option C. ->  4.0 cm
Question 100. Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
  1.     Meet
  2.     Do not meet
  3.     Either ‘A’ or ‘B’
  4.     None of these
 Discuss Question
Answer: Option B. ->  Do not meet

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