0 of 13 questions completed
Test Description :
Name: Fluid Machines & Hydraulic Machine – Assertion & Reasons question 2
Subject: Fluid Machines & Hydraulic Machine
Time Allowed: 15 Minutes
Important for: Chemical Engineering, Civil Engineering and Mechanical Engineering B. tech / M Tech., GATE, IES and Job interviews.
You have already completed the Test before. Hence you can not start it again.
Test is loading...
You must sign in or sign up to start the Test.
You have to finish following quiz, to start this Test:
Congratulations!!!" Fluid Machines & Hydraulic Machine - Assertion & Reasons question 2 "
0 of 13 questions answered correctly
Time has elapsed
Your Final Score is : 0
You have attempted : 0
Number of Correct Questions : 0 and scored 0
Number of Incorrect Questions : 0 and Negative marks 0
It’s time to share this quiz with your friends on Facebook, Twitter, Google Plus, Whatsapp or LinkedIn…
Click on View Questions Button to check Correct and incorrect answers.
- Question 1 of 13
1. Question1 points
Assertion: Irrotational flow exists when the net rotation of the fluid about its mass centre is zero.
Reason: There is always a possibility of rotation in ideal fluid and therefore, ideal fluids cannot have irrotational flow.CorrectIncorrectUnattempted
- Question 2 of 13
2. Question1 points
Assertion: In an open channel flow, the maximum velocity filament does not occur on the free surface.
Reason: There is wind drag on the free surface of an open channel.CorrectIncorrectUnattempted
- Question 3 of 13
3. Question1 points
Assertion: For submerged bodies, static forces in the lateral direction are balanced.
Reason: For submerged bodies, static forces in the vertical direction are not balanced.CorrectIncorrectUnattempted
- Question 4 of 13
4. Question1 points
Assertion: At the critical state of flow, the specific force is a minimum for the given discharge.
Reason: For a minimum value of the specific force, the first derivation of force with respect to depth should be unity.CorrectIncorrectUnattempted
- Question 5 of 13
5. Question1 points
Assertion: Gravity influences the pipe flow.
Reason: Gravity term (g) appears explicitly in Darcy-Weisbach formula for pipe flow resistance.CorrectIncorrectUnattempted
- Question 6 of 13
6. Question1 points
Assertion: Ψ = 14.14y -10x represents uniform flow at an angle of 45° o the x-axis with a velocity of 24.14 units along the x-axis.
Reason: The velocity component is derivable from the appropriate sum of the partial derivatives.CorrectIncorrectUnattempted
- Question 7 of 13
7. Question1 points
Assertion: When friction blocks are provided in a stilling basin to localize and stabilise the jump formation, the downstream depth in the jump is less than without the friction blocks.
Reason: The discharge per unit width at the section where the blocks are located is increased.CorrectIncorrectUnattempted
- Question 8 of 13
8. Question1 points
Assertion: The specific speed of a Pelton wheel is generally much less than that of a reaction turbine
Reason: Pelton wheels generally use more than one nozzle and the specific speed is defined for power developed per nozzle.CorrectIncorrectUnattempted
- Question 9 of 13
9. Question1 points
Assertion: Flow in the boundary layer is always laminar.
Reason: In turbulent flow on a smooth boundary, a laminar sublayer still exists within the boundary layer.CorrectIncorrectUnattempted
- Question 10 of 13
10. Question1 points
Assertion: A loss of head at a sudden constraction in a pipe is smaller than that at a sudden expansion.
Reason: When the flow contracts, tends to become irrotational.CorrectIncorrectUnattempted
- Question 11 of 13
11. Question1 points
Assertion: In Rayleigh’s method of dimensional analysis, the dependent variable is written as the function of exponential terms of independent variables.
Reason: In Rayleigh’s method, when the number of independent variables exceeds three, the exponents of non-repeating variables are expressed as the exponents of repeating variables.CorrectIncorrectUnattempted
- Question 12 of 13
12. Question1 points
Assertion: If laminar flow of oil between two points of a given pipeline is doubled, then the power consumption is increased to four times the original power.
Reason: In laminar flow through circular pipes, head loss varies directly as the discharge.CorrectIncorrectUnattempted
- Question 13 of 13
13. Question1 points
Assertion: A hydraulic jump cannot be expected on a long steep slope (fed by a large reservoir) when it is followed by a short reach of adverse slope terminating in a vertical drop into a deep and wide reservoir.
Reason: The terminal depth in such an adverse slope reach will be critical and the flow in the steep slope may be nearly at or at normal depth.CorrectIncorrectUnattempted