Questions and answers for exam Preparation

MCQs

Total Questions : 97 | Page 7 of 10 pages

Question 61. In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate

increases continuously.
decreases continuously.
decreases, becomes stable and then increases.
increases, becomes stable and then decreases.

Discuss Question

Answer: Option D. -> increases, becomes stable and then decreases.

-NA-

Question 62. Oil flows through a 200 mm diameter horizontal cast iron pipe (friction factor, f = 0.0225) of length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss (in m) due to friction is (assume g = 9.81 m/s2)

116.18
0.116
18.22
232.36

Discuss Question

Answer: Option A. -> 116.18

-NA-

Question 63. During normalizing process of steel, the specimen is heated

between the upper and lower critical temperature and cooled in still air.
above the upper critical temperature and cooled in furnace.
above the upper critical temperature and cooled in still air.
between the upper and lower critical temperature and cooled in furnace.

Discuss Question

Answer: Option C. -> above the upper critical temperature and cooled in still air.

-NA-

Question 64. Match the following metal forming processes with their associated stresses in the workpiece.Metal forming process Type of stress1. Coining P. Tensile2. Wire Drawing Q. Shear3. Blanking R. Tensile and compressive4. Deep Drawing S. Compressive

1-S, 2-P, 3-Q, 4-R
1-S, 2-P, 3-R, 4-Q
1-P, 2-Q, 3-S, 4-R
1-P, 2-R, 3-Q, 4-S

Discuss Question

Answer: Option A. -> 1-S, 2-P, 3-Q, 4-R

-NA-

Question 65. Air enters an adiabatic nozzle at 300 kPa, 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kPa with a velocity of 180 m/s. The inlet area is 80 cm2. The specific heat of air Cp is 1008 J/kg.K.The exit area of the nozzle in cm2 is

90.1
56.3
4.4
12.9

Discuss Question

Answer: Option D. -> 12.9

-NA-

Question 66. Air enters an adiabatic nozzle at 300 kPa, 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kPa with a velocity of 180 m/s. The inlet area is 80 cm2. The specific heat of air Cp is 1008 J/kg.K.The exit temperature of the air is

516 K
532 K
484 K
468 K

Discuss Question

Answer: Option C. -> 484 K

-NA-

Question 67. The cost function for a product in a firm is given by 5q2, where q is the amount of production. The firm can sell the product at a market price of Rs. 50 per unit. The number of units to be produced by the firm such that the profit is maximized is

Discuss Question

Answer: Option A. -> 5

-NA-

Question 68. Choose the grammatically INCORRECT sentence:

They gave us the money back less the service charges of Three Hundred rupees.
This country's expenditure is not less than that of Bangladesh.
The committee initially asked for a funding of Fifty Lakh rupees, but later settled for a lesser sum.
This country's expenditure on educational reforms is very less.

Discuss Question

Answer: Option D. -> This country's expenditure on educational reforms is very less.

-NA-

Question 69. Given the sequence of terms, AD CG FK JP, the next term is

Discuss Question

Answer: Option A. -> OV

-NA-

Question 70. Which one of the following options is the closest in meaning to the word given below? Mitigate