MCQs

Total Questions : 2607 | Page 44 of 261 pages
Question 431. Which of the following statement is correct?
  1.    The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials
  2.    The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials
  3.    The toughness of a material increases when it is heated
  4.    The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres
 Discuss Question
Answer: Option B. -> The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials
Question 432. Which of the following statement is correct?
  1.    The cold rolled shafting is stronger than hot rolled shafting
  2.    The hot rolled shafting is stronger than cold rolled shafting
  3.    The cold rolled and hot rolled shafting are equally strong
  4.    The shafts are not made by rolling process
 Discuss Question
Answer: Option A. -> The cold rolled shafting is stronger than hot rolled shafting
Question 433. Which of the following statement is correct?
  1.    The distance from a point on one thread to the corresponding point on the next thread is called pitch
  2.    The distance which a screw thread advances axially in one rotation of the nut is called lead
  3.    In single start threads, lead is equal to pitch
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 434. Which of the following statement is correct?
  1.    A parallel sunk key is a taperless key
  2.    A parallel sunk key may be rectangular or square in cross-section
  3.    A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 435. When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as
  1.    Spur gearing
  2.    Helical gearing
  3.    Bevel gearing
  4.    Spiral gearing
 Discuss Question
Answer: Option D. -> Spiral gearing
Question 436. The strength of the unriveted plate (P) per pitch length is equal to
  1.    p.d.σt
  2.    p.t.σt
  3.    (p - d) σt
  4.    (p - d) t.σt
 Discuss Question
Answer: Option B. -> p.t.σt
Question 437. The permissible stress for carbon steel under static loading is generally taken as
  1.    2000-3000 kg/m²
  2.    3000-4000 kg/cm²
  3.    4000-4500 kg/cm²
  4.    7500-10,000 kg/cm²
 Discuss Question
Answer: Option C. -> 4000-4500 kg/cm²
Question 438. The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, Pc = tension in belt due to centrifugal force)
  1.    3 Pc
  2.    1 Pc
  3.    Pc/3
  4.    2 Pc
 Discuss Question
Answer: Option A. -> 3 Pc
Question 439. Surface endurance limit of gear material is dependent upon its
  1.    Elastic strength
  2.    Yield strength
  3.    Brinell hardness number
  4.    Toughness
 Discuss Question
Answer: Option C. -> Brinell hardness number
Question 440. The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be
  1.    2/8
  2.    8/2
  3.    4/8
  4.    8/4
 Discuss Question
Answer: Option C. -> 4/8

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