Chemical Engineering

Efficiency

Question 1
Marks : +2 | -2
Pass Ratio : 100%
What is the efficiency of the system, if the actual work output from the process is 20 J and work output for a reversible process is 25 J?
10%
20%
40%
80%
Explanation:
Efficiency = 20/25*100 = 80%.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
What is the efficiency of the system, if the actual work output from the process is 10 J and work output for a reversible process is 40 J?
10%
25%
40%
65%
Explanation:
Efficiency = 10/40*100 = 25%.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Energy out and Energy in of a system are 10 J and 25 J respectively, what is the efficiency of the system?
10%
40%
50%
80%
Explanation:
Efficiency = 10/25*100 = 40%.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Energy out and Energy in of a system are 40 J and 25 J respectively, what is the efficiency of the system?
40%
80%
160%
200%
Explanation:
Efficiency = 40/25*100 = 160%.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Energy out and Energy in of a system are 15 J and 25 J respectively, what is the efficiency of the system?
40%
60%
80%
110%
Explanation:
Efficiency = 15/25*100 = 60%.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
What is the efficiency of the system, if the actual work input from the process is 10 J and work input for a reversible process is 20 J?
20%
50%
100%
200%
Explanation:
Efficiency = 20/10*100 = 200%.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Energy out and Energy in of a system are 5 J and 25 J respectively, what is the efficiency of the system?
20%
40%
60%
80%
Explanation:
Efficiency = 5/25*100 = 20%.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
What is the efficiency of the system, if the actual work input from the process is 20 J and work input for a reversible process is 25 J?
20%
80%
125%
150%
Explanation:
Efficiency = 25/20*100 = 125%.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Energy out and Energy in of a system are 10 J and 20 J respectively, what is the efficiency of the system?
20%
30%
40%
50%
Explanation:
Efficiency = 10/20*100 = 50%.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
What is the efficiency of the system, if the actual work output from the process is 15 J and work output for a reversible process is 20 J?
25%
50%
75%
100%
Explanation:
Efficiency = 15/20*100 = 75%.