MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11
        
Could we no just as well define the efficiency of an engine as ϵ = |W| Qout | rather than as ϵ = |W|/|Qin|? why don’t we?
3 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
							The thermal efficiency (ε) of an engine is defined as the work the engine does per cycle (“what you get”) divided by the heat energy it absorbs per cycle (“what you pay for”), or
ε = Energy you get / Energy you pay for
= W/ Qin.
= Qin-Qout/ Qin
Here Qin is the input heat energy of source and Qout is the output heat energy of sink.
Therefore efficiency ε of an engine is defined as the ratio between useful heat (heat converted into work) to the total heat supplied to the engine.
The efficiency of an engine measures the amount of energy (W = Qin-Qout) that we can extract from the original energy or input energy (Qin) of that engine. That is why we could not just as well define the efficiency of an engine as ε = W/ Qout rather than ε = W/ Qin.
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 551 off

COUPON CODE: SELF20


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 594 off

COUPON CODE: SELF20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details