Fluid Mechanics & Thermal Sciences [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering (ME)]: Questions 9 - 12 of 910
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Question 9
Question MCQ▾
The Phenomenon of delay in condensation in a nozzle is known as________
Choices
Choice (4) | Response | |
---|---|---|
a. | Saturated Flow | |
b. | Uniform flow | |
c. | Supersaturated flow | |
d. | Steady flow |
Question 10
Appeared in Year: 2009
Question MCQ▾
If a closed system is undergoing an irreversible process , the entropy of system
Choices
Choice (4) | Response | |
---|---|---|
a. | must increase | |
b. | must decrease | |
c. | can increase , decrease or remain constant | |
d. | always remains constant |
Question 11
Question MCQ▾
Unlike the viscosity of liquids, the viscosity of gases increases with increasing temperature. This is due to
Choices
Choice (4) | Response | |
---|---|---|
a. | Decreased momentum transfer in the molecules. | |
b. | Increased cohesive force between the molecules. | |
c. | Increased in both cohesive force and momentum transfer. | |
d. | Increased momentum transfer in the molecules. |
Question 12
Question Assertion-Reason▾
Assertion(Ꭺ)
The C. I. engine is found to be more efficient than an S. I. engine.
Reason(Ꭱ)
Modern C. I. engines operate on a dual-cycle, which has efficiency greater than the Otto cycle.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
b. | Ꭺ is true but Ꭱ is false | |
c. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
d. | Ꭺ is false but Ꭱ is true |