5

Correct Answer

--Question Cancelled

Question32--Air flows steadily at low speed through a horizontal nozzle, discharging to atmosphere. The area at the nozzle inlet is 0.1 ¢q2 and at the exit 0.02 772 . Determine the
gauge pressure (kPa) required at the nozzle inlet to produce an outlet speed of 50 mis.

۸48

೦-448

D:-2.48

Correct Answer

:-Question Cancelled

Question33:-A simple U-tube manometer is installed actoss an orifice meter. The manometer filled with mercury (specific gravity 13.6) and the liquid above the mercury is carbon.
tetrachloride (specific gravity 1.6). The manometer reads 200 mm. What is the pressure difference over the manometer in N/y7;2 7

23536
86
6
06:
Correct Answer Option-A

Question34:-A pump is used to deliver water to an overhead tank at a flow rate of 4 x 19-3 m3/s. The pump adds 2 kW to water. If the density of water is 1000 kg/m 3 and
acceleration due to gravity is 10 71/2, 1016 pump head added to the flow ‏کا‎

۸-10 ۹
8:20 ೫:
೦4೦೧
‏ہ 50م‎
Correct Answer: Option-D

Question35 -Match the following =

‘Column A Column 8
(P) Turbulence (1) Reciprocating pump
(Q) NPSH (1 Packed bed

(R) Ergun equation (11 ೯101008170 velocity
(5) Rotameter (WV) Impeller

(7) Power number (५) Vena contracta

கம வரய
B:-QLV, Roll, 5-01

6

॥, ६-४,

2
0-೦-೫, 5-೪, 70/
Correct Answer Option-A

Question36:-With increasing flow rate, the hydraulic efficiency of a centrifugal pump
‘A Monotonically decreases
B:-Decreases and then increases

C=temains constant

“Increases and then decreases
Correct Answer:- Option-D

Question37-A steady, incompressible, two-domensional velocity field is given by the following components in x-y ~ plane :
‏ع نا‎ 0.205 + 0.97» + 0.851 y

v= -0,509 + 0,953x - 0.97 y

Calculate the x-component of acceleration at the point (x, y) = (2, 1.5)

27
മന
೦-೩27
०.३.३2
Correct Answer:- Option-C

Question38:-The wall of a cold storage consists of three layers - an outer layer of ordinary bricks, 25 cm thick, a middle layer of cork, 10 cm thick and an inner layer of cement, 6 cm
thick. The thermal conductivities of the materials are - brick : 0.7, cork : 0.043 and cement : 0.72 W/m°C. The temperature of outer surface of the wall is 30°C and the inner is 15°C.
‘Then, the steady-state rate of heat gain per unit area (W/y7,2) of the wall is

۸13

8:17

3ی

2.63
Correct Answer:- Option-B

‘Question39:-A Horton sphere (a spherical vessel used for cryogenic storage) of 16 m diameter that contains liquid ammonia at 4°C. The tank is insulated with a 10 cm thick layer of
Polyurethane foam having a thermal conductivity of 0.02 Wim*C. The outer surface temperature of the insulation is 27°C. Find the heat gain by the sphere.

A-3746 W
8:--3476
08

3746 W