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MCQs

Total Questions : 1284 | Page 124 of 129 pages
Question 1231. A particle moving with a simple harmonic motion, attains its maximum velocity when it passes
  1.    Through the mean position
  2.    The extreme point of the oscillation
  3.    None of these
  4.    Through a point at half amplitude
 Discuss Question
Answer: Option A. -> Through the mean position
Question 1232. The practical units of work, is
  1.    Dyne
  2.    Newton
  3.    Erg
  4.    Joule
 Discuss Question
Answer: Option D. -> Joule
Question 1233. According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on
  1.    Two straight lines
  2.    A straight line
  3.    A triangle
  4.    A point
 Discuss Question
Answer: Option B. -> A straight line
Question 1234. Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of
  1.    12 Newtons
  2.    10 Newtons
  3.    5 Newtons
  4.    8 Newtons
 Discuss Question
Answer: Option B. -> 10 Newtons
Question 1235. A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about
  1.    9000 km per hour
  2.    11,000 km per hour
  3.    8000 km per hour
  4.    7000 km per hour
 Discuss Question
Answer: Option B. -> 11,000 km per hour
Question 1236. The velocity ratio of the differential wheel and axle is
  1.    2R/r1
  2.    R/r1 - r2
  3.    2R/r1 + r2
  4.    3R/r1 - r2
 Discuss Question
Answer: Option A. -> 2R/r1
Question 1237. Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is
  1.    43864
  2.    43895
  3.    43833
  4.    43835
 Discuss Question
Answer: Option D. -> 43835
Question 1238. 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 (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)
  1.    (1/3) g sinB
  2.    g sin 9
  3.    (2/3) g sin 0
  4.    (2/3) g cos 9
 Discuss Question
Answer: Option C. -> (2/3) g sin 0
Question 1239. A projectile is fired at an angle ‘θ’ to the vertical. Its horizontal range will be maximum when ‘θ’ is
  1.    45°
  2.    30°
  3.    0°
  4.    90°
 Discuss Question
Answer: Option A. -> 45°
Question 1240. A smooth cylinder lying on its convex surface remains
  1.    Out of equilibrium
  2.    In unstable equilibrium
  3.    In stable equilibrium
  4.    In neutral equilibrium
 Discuss Question
Answer: Option B. -> In unstable equilibrium

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