MCQs

Total Questions : 2607 | Page 46 of 261 pages
Question 451. In a flange coupling, the flanges are coupled together by means of
  1.    Bolts and nuts
  2.    Studs
  3.    Headless taper bolts
  4.    None of these
 Discuss Question
Answer: Option A. -> Bolts and nuts
Question 452. A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.
  1.    Equal to
  2.    Less than
  3.    Greater than
  4.    None of these
 Discuss Question
Answer: Option B. -> Less than
Question 453. The application of third type levers is found in
  1.    A pair of tongs
  2.    Hand wheel of a punching press
  3.    Lever of a loaded safety valve
  4.    Handle of a hand pump
 Discuss Question
Answer: Option A. -> A pair of tongs
Question 454. The application of second type levers is found in
  1.    Handle of a hand pump
  2.    Hand wheel of a punching press
  3.    Lever of a loaded safety valve
  4.    A pair of tongs
 Discuss Question
Answer: Option C. -> Lever of a loaded safety valve
Question 455. In composite or reverse laid ropes
  1.    Direction of twist of wires in strands is opposite to the direction of twist of strands
  2.    Direction of twist of wires and strands are same
  3.    Wires in two adjacent strands are twisted in opposite direction
  4.    Wires are not twisted
 Discuss Question
Answer: Option C. -> Wires in two adjacent strands are twisted in opposite direction
Question 456. In the assembly of pulley, key and shaft
  1.    Pulley is made the weakest
  2.    Key is made the weakest
  3.    Key is made the strongest
  4.    All the three are designed for equal strength
 Discuss Question
Answer: Option B. -> Key is made the weakest
Question 457. When the speed of belt increases,
  1.    The coefficient of friction between the belt and pulley decreases
  2.    The coefficient of friction between the belt and pulley increases
  3.    The power transmitted will decrease
  4.    The power transmitted will increase
 Discuss Question
Answer: Option C. -> The power transmitted will decrease
Question 458. The groove angle of pulleys for V-belt is
  1.    340 to 360
  2.    420 to 450
  3.    More than 400
  4.    300 to 320
 Discuss Question
Answer: Option A. -> 340 to 360
Question 459. For unequal width of butt straps, the thicknesses of butt straps are
  1.    0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
  2.    0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
  3.    0.75 t for both the straps on the inside and outside
  4.    0.625 t for both the straps on the inside and outside
 Discuss Question
Answer: Option B. -> 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
Question 460. A bolt is designed on the basis of __________ with a large factor of safety.
  1.    Direct tensile stress
  2.    Direct compressive stress
  3.    Direct bending stress
  4.    Direct shear stress
 Discuss Question
Answer: Option A. -> Direct tensile stress

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