Fluid Mechanics and Machinery MCQ Questions with answers and solutions Page 23

Q. Pump transfers the mechanical energy of a motor or of an engine into of a fluid.

(A) pressure energy
(B) kinetic energy
(C) either pressure energy or kinetic energy
(D) pressure energy, kinetic energy or both

💬 Discuss

✅ Correct Answer: (D) pressure energy, kinetic energy or both

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Which of the following is NOT a type of positive displacement pumps?

(A) reciprocating pump
(B) rotary displacement pump
(C) centrifugal pump
(D) none of the mentioned

💬 Discuss

✅ Correct Answer: (C) centrifugal pump

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Rotary displacement pumps are suitable for handling

(A) oils
(B) gritty liquids
(C) both oils as well as gritty liquids
(D) granules

💬 Discuss

✅ Correct Answer: (A) oils

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Which of the following is/are not example/s of rotary displacement pumps?

(A) gear pump
(B) vane pump
(C) rotary piston pump
(D) centrifugal pump

💬 Discuss

✅ Correct Answer: (D) centrifugal pump

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. pump is also called as velocity pump.

(A) reciprocating
(B) rotary displacement
(C) centrifugal
(D) screw

💬 Discuss

✅ Correct Answer: (C) centrifugal

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Discharge capacity of the reciprocating pump is that of the centrifugal pump.

(A) higher than
(B) lower than
(C) same as
(D) unpredictable

💬 Discuss

✅ Correct Answer: (B) lower than

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Main application of liquid ring pump is in which of the following?

(A) low viscosity products
(B) heavily aerated liquids
(C) gentle treatment with high viscosity
(D) water treatment

💬 Discuss

✅ Correct Answer: (B) heavily aerated liquids

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. What is the water flow direction in the runner in a Francis turbine?

(A) axial and then tangential
(B) tangential and then axial
(C) radial and then axial
(D) axial and then radial

💬 Discuss

✅ Correct Answer: (C) radial and then axial

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. Which of the following runner types will have the highest vane angle at inlet (β1 value)?

(A) slow runner
(B) medium runner
(C) fast runner
(D) vane angle is defined only for kaplan turbines and not francis turbines

💬 Discuss

✅ Correct Answer: (C) fast runner

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

Q. 2 AXIAL, RADIAL AND MIXED FLOW TURBINES.

(A) guide vane angle at inlet
(B) blade angle at inlet
(C) vane angle at inlet
(D) blade angle at outlet

💬 Discuss

✅ Correct Answer: (A) guide vane angle at inlet

Published by Mr. Dubey ⭐ 111.54K Points at 14-Jun-2020 11:59 am in Fluid Mechanics and Machinery

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