Tricky GATE Questions- Part 1

Keeping GATE and PSU aspirants in view, few tricky/logical questions are being posted in the video:


Questions in the video are:

• For an Ideal Gas undergoing a throttling process 1-2, which of the following relation holds good?

• Air is contained in one half of the insulated tank as shown in the figure below while the otehr half is evacuated completely. The membrane is punctured and the air quickly fills the entire volume. Calculate the specific entropy change of this insulated system.

• If a pure substance contained in a rigid vessel passes through the critical state of heating , its initial state should should be...     

a) Subcooled  Water                                             b) Saturated water

c) Wet Steam                                                        d) Saturated steam

• An ideal otto cycle (O) and an ideal diesel cycle (D) have the same maximum temperature and reject equal amount of heat. Also, the working fluid enters at the same state before compression. Which one of the following statements regarding their thermal efficiencies is always true?

For solutions please watch video below-