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MCQs

Total Questions : 101 | Page 1 of 11 pages
Question 1. For a long slender column of uniform cross section, the ratio of critical buckling load for the case
with both ends clamped to the case with both ends hinged is
  1.    1
  2.    2
  3.    4
  4.    8
 Discuss Question
Answer: Option C. -> 4


-NA-


Question 2. A thin walled spherical shell is subjected to an internal pressure. If the radius of the shell is
increased by 1% and the thickness is reduced by 1%, with the internal pressure remaining the same,
the percentage change in the circumferential (hoop) stress is
  1.    0
  2.    1
  3.    1.08
  4.    2.02
 Discuss Question
Answer: Option D. -> 2.02


-NA-


Question 3. A circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a
flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is
  1.    395
  2.    790
  3.    1580
  4.    3160
 Discuss Question
Answer: Option B. -> 790


-NA-


Question 4. A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of
the beam cross section about the neutral axis is I and the Young's modulus is E. The magnitude of
the maximum deflection is
  1.    ML2/2EI
  2.    ML2/EI
  3.    2ML2/EI
  4.    4ML2/EI
 Discuss Question
Answer: Option A. -> ML2/2EI


-NA-


Question 5. A sine bar has a length of 250 mm. Each roller has a diameter of 20 mm. During taper angle
measurement of a component, the height from the surface plate to the centre of a roller is 100 mm.
The calculated taper angle (in degrees) is
  1.    21.1
  2.    22.8
  3.    23.6
  4.    68.9
 Discuss Question
Answer: Option A. -> 21.1


-NA-


Question 6. In a single pass rolling process using 410 mm diameter steel rollers, a strip of width 140 mm and
thickness 8 mm undergoes 10 % reduction of thickness. The angle of bite in radians is
  1.    0.006
  2.    0.031
  3.    0.062
  4.    0.600
 Discuss Question
Answer: Option C. -> 0.062


-NA-


Question 7. Match the following plastic products with their most appropriate materials.Products          Materials1. Gears         P. Polymethylmethacrylate (PMMA)2. Helmets    Q. Polyamides (PA)3. Lenses        R. Polyethylene (PE)4. Food packaging  S. Acrylonitrile-butadiene-styrene (ABS)
  1.    1-Q, 2-R, 3-S, 4-P
  2.    1-S, 2-P, 3-Q, 4-R
  3.    1-P, 2-Q, 3-R, 4-S
  4.    1-Q, 2-S, 3-P, 4-R
 Discuss Question
Answer: Option D. -> 1-Q, 2-S, 3-P, 4-R


-NA-


Question 8. The fixed cost and the variable cost of production of a product are Rs. 20000 and Rs. 50 per unit,
respectively. The demand for the item is 500 units. To break even, the unit price of the items in
Rs. should be
  1.    50
  2.    75
  3.    90
  4.    100
 Discuss Question
Answer: Option C. -> 90


-NA-


Question 9. Therbligs refer to the
  1.    basic types of fixtures used in machining.
  2.    fundamental motions used in manual work.
  3.    basic types of waste in manufacturing process.
  4.    fundamental types of material handling systems.
 Discuss Question
Answer: Option B. -> fundamental motions used in manual work.


-NA-


Question 10. Customers arrive at a ticket counter at a rate of 50 per hr and tickets are issued in the order of their
arrival. The average time taken for issuing a ticket is 1 min. Assuming that customer arrivals form a
Poisson process and service times are exponentially distributed, the average waiting time in queue
in min is
  1.    3
  2.    4
  3.    5
  4.    6
 Discuss Question
Answer: Option C. -> 5


-NA-


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