8:72, 0-4, 83,52,
04,೦2, 83,52,
0:೫2, 0-4, 8೩, 5-3
Correct Answer:- ೦೧0008.
Question15:-Choose the incorrect statement.
‘As Centrifugal pumps deliver liquid at uniform pressure without pulsations.
B:-Reciprocating pumps operate at nearly constant efficiency over a wide range of discharge rates.
For a centrifugal pump, the valves in the discharge line may be closed without injuring the pump.
D-Both centrifugal and reciprocating pumps are subject to air binding
Correct Answer:- Option-D
Question16::Which of the following is a positive displacement pump ?
‘Ac Centrifugal pump
B:-Gear pump
C-Axial pump
D-biffuser pump
Correct Answer:- Option ®
Question17::When the diameter of the column is small with deep bed of solids, which problem is prone to occur in a fluidized bed 7
‘AcSlugging
B:-Channeling
CeEntrainment
D-Circulation
Correct Answer:- Option-é
Question18::What is the meaning of the following expression : -150 + 200 mesh particles ?
കടട through 150 and retained in 200
B:-Does not pass through 150 and 200
(C=Pass through both 150 and 200
D:-Pass through 200 and retained in 150
Correct Answer:- Option-é

Question19:-A centrifugal pump is used to pump water (density = 1000 kg/m") from an inlet pressure of 10"Pa to an outlet pressure of 2x 10° Pa. The exit is at an elevation of 10 m

above the pump. The cross sectional area of inlet and outlet pipes are 10”'m*. The average velocity of fluid is 10 m/s. The acceleration due to gravity is 10 m/s*. Neglect the frictional
losses in the system. The pump has an efficiency of 80%. The power required for the pump in head of water is

டய
B:-10.33 m
ടന
‏مہ مھ‎
Correct Answer:- Option-C
Question20::Which of the following Mixers are used for Cohesive Solids ?
‘AcChange can mixer
B:-Tumbling mixer
C=Ribbon blender
D-Impact wheels
Correct Answer:- Option-é
Question21:-One Btu of heat is supplied to 100 g water at 30°C and atmospheric pressure. There is no heat losses to the surroundings. The temperature of water will increase to
‏256ھ‎
‎B:-0.252°C
‎ടമ
‎5:3026

Correct Answer: Option-C
Question22:-The molar composition of a gas mixture is 10% H, , 20% 0; , 30% 11, and the rest water vapour. If half of the water vapour is condensed, the molar composition of 0, in the

resulting gas will be

96ھ