Questions and answers for exam Preparation

MCQs

Total Questions : 188 | Page 1 of 19 pages

Question 1. Statement 1: Bernoulli’s equation can be applied to flow through pipes both, with and without friction.
Statement 2: Air is an incompressible fluid.

True, False
True, True
False, False
False, True

Discuss Question

Answer: Option A. -> True, False
Answer: (a).True, False

Question 2. What is Kinetic Energy Factor in the Bernoulli’s equation?

It is because friction varies
It is because friction stays constant
It is because the velocity in every layer varies and only the average velocity is accounted hence a correction factor is a need
None of the mentioned

Discuss Question

Answer: Option C. -> It is because the velocity in every layer varies and only the average velocity is accounted hence a correction factor is a need
Answer: (c).It is because the velocity in every layer varies and only the average velocity is accounted hence a correction factor is a need

Question 3. The energy loss due to the friction at the walls of a pipe is called _____

Kinetic friction
Skin friction
Static friction
None of the mentioned

Discuss Question

Answer: Option B. -> Skin friction
Answer: (b).Skin friction

Question 4. Statement 1: Reynolds number is the ratio of viscous force to Inertial Force.
Statement 2: The thickness of Boundary layer increases with the increase in distance from the surface.

True, False
True, True
False, False
False, True

Discuss Question

Answer: Option C. -> False, False
Answer: (c).False, False

Question 5. In Bernoulli’s equation, the friction correction factor is added to the LHS and the energy contributed by the pump is written on the RHS.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 6. Drying rate curve is plot between _____ and _____

Critical moisture content, critical humidity
Critical moisture content, drying rate
Critical humidity, drying rate
Moisture content, drying rate

Discuss Question

Answer: Option D. -> Moisture content, drying rate
Answer: (d).Moisture content, drying rate

Question 7. Moisture on dry basis cannot be more than a hundred percentage.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 8. On wet basis, the denominator stays constant whereas in moisture content on dry basis, the denominator changes.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 9. The EMC-RH data is fitted to Henderson’s equation. Which of the following is true about the relative humidity with respect to food technology terminology?