SSC JE Mechanical Engineering 23rd Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 141

Which factor contributes to the efficiency of the Otto cycle?

Video Solution
Question 142

If a Carnot refrigerator has a COP of 6. What is the ratio of the lower to the higher absolute temperature?

Video Solution
Question 143

Which of the below stated are properties of a PMM-2?
(1) When net work is equal to the heat absorbed and work efficiency is 100%.
(2) Heat is exchanged from one heat reservoir only.
(3) It violates Kelvin-Planck statement.
(4) It is a hypothktical machine.

Video Solution
Question 144

Tonnes of refrigeration mean ________.

Video Solution
Question 145

What is the ratio W/Q (W= work transfer from cycle, Q = heat transfer to the cycle) known as?

Video Solution
Question 146

What processes does Carnot cycle consist of?

Video Solution
Question 147

What is the temperature at which a system goes under a reversible isothermal process without heat transfer?

Video Solution
Question 148

How is the thermal efficiency of an I.C engine related to compression ratio?

Video Solution
Question 149

All the processes in an air standard cycle are assumed to be ________.

Video Solution
Question 150

Water flows through a turbine in which due to friction there is a temperature rise from $$30^\circ C$$ to $$35^\circ C$$. If there is no heat transfer taking place during the process. What is the change in the entropy of water?

Video Solution
cracku

Boost your Prep!

Download App