Discussion
Two machines are compared: one threshes 0.9 t/h of grain at 8 kW and the other 1.4 t/h at 13 kW.
Which has the lower specific energy consumption?
Answer: C
Correct answer: The first, at 8.9 against 9.3 kWh per tonne
Divide power by throughput in each case:
\[ \frac{8.0}{0.9} = 8.9, \qquad \frac{13.0}{1.4} = 9.3\ \mathrm{kWh\ per\ tonne} \]
The first machine is the more efficient per tonne even though the second has half again the output. This is exactly why specific energy is quoted rather than raw power: throughput and consumption must be read together, and the larger machine is not automatically the better one.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development