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MCQs

Total Questions : 2607 | Page 78 of 261 pages
Question 771. For longitudinal joint in boilers, the type of joint used is
  1.    butt joint with single cover plate
  2.    butt joint with double cover plate
  3.    lap joint with one ring overlapping the other
  4.    any one of the above
 Discuss Question
Answer: Option B. -> butt joint with double cover plate
Answer: (b).butt joint with double cover plate
Question 772. A flange coupling is used to connect two shafts
  1.    which are perfectly aligned
  2.    which are not in exact alignment
  3.    have lateral misalignment
  4.    whose axes intersect at a small angle
 Discuss Question
Answer: Option A. -> which are perfectly aligned
Answer: (a).which are perfectly aligned
Question 773. A cotter joint is used to transmit
  1.    axial tensile load only
  2.    axial compressive load only
  3.    combined axial and twisting loads
  4.    axial tensile or compressive loads
 Discuss Question
Answer: Option D. -> axial tensile or compressive loads
Answer: (d).axial tensile or compressive loads
Question 774. The maximum efficiency of a square threaded screw is
  1.    (1 - sinφ)/ (1 + sinφ)
  2.    (1 + sinφ)/ (1 - sinφ)
  3.    (1 - sinφ)/ (1 + cosφ)
  4.    (1 + cosφ)/ (1 - sinφ)
 Discuss Question
Answer: Option A. -> (1 - sinφ)/ (1 + sinφ)
Answer: (a).(1 - sinφ)/ (1 + sinφ)
Question 775. Lewis equation is applied
  1.    only to the pinion
  2.    only to the gear
  3.    to stronger of the pinion or gear
  4.    to weaker of the pinion or gear
 Discuss Question
Answer: Option D. -> to weaker of the pinion or gear
Answer: (d).to weaker of the pinion or gear
Question 776. The dynamic tooth load is due to
  1.    inaccuracies of tooth spacing
  2.    irregularities in tooth profiles
  3.    deflections of teeth under load
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 777. In a steam engine, the piston rod is usually connected to the crosshead by means of a
  1.    knuckle joint
  2.    cotter joint
  3.    oldham coupling
  4.    universal joint
 Discuss Question
Answer: Option B. -> cotter joint
Answer: (b).cotter joint
Question 778. A column is known as a long column if the slenderness ratio is
  1.    40
  2.    50
  3.    70
  4.    100
 Discuss Question
Answer: Option D. -> 100
Answer: (d).100
Question 779. The load cup of a screw jack is made separate from the head of the spindle to
  1.    enhance the load carrying capacity of the jack
  2.    reduce the effort needed for lifting the working load
  3.    prevent the rotation of load being lifted
  4.    reduce the value of frictional torque
 Discuss Question
Answer: Option C. -> prevent the rotation of load being lifted
Answer: (c).prevent the rotation of load being lifted
Question 780. When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
  1.    square threads
  2.    acme threads
  3.    knuckle threads
  4.    buttress threads
 Discuss Question
Answer: Option D. -> buttress threads
Answer: (d).buttress threads

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