Lakshya Education MCQs

Question: When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be
Options:
A.ω²r. (n + 1)/n
B.ω²r. (n - 1)/n
C.ω²r. n/(n + 1)
D.ω²r. n/(n - 1)
Answer: Option A

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More Questions on This Topic :

Question 1. When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be
  1.    Minimum
  2.    Zero
  3.    Maximum
  4.    None of these
Answer: Option B
Question 2. When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be
  1.    ω² r {(n + 1)/n}
  2.    ω² r {(n - 1)/n}
  3.    ω² r {n/(n + 1)}
  4.    ω² r {n/(n - 1)}
Answer: Option B
Question 3. If two moving elements have surface contact in motion, such pair is known as
  1.    Sliding pair
  2.    Rolling pair
  3.    Surface pair
  4.    Lower pair
Answer: Option D
Question 4. The velocity of a body moving with simple harmonic motion is __________ at the mean position.
  1.    Zero
  2.    Minimum
  3.    Maximum
  4.    None of these
Answer: Option C
Question 5. The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.
  1.    Zero
  2.    Minimum
  3.    Maximum
  4.    None of these
Answer: Option A
Question 6. When the sleeve of a Porter governor moves upwards, the governor speed
  1.    Increases
  2.    Decreases
  3.    Remain unaffected
  4.    First increases and then decreases
Answer: Option A

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