Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Two ideal heat engines A and B have their sources at 600K and 400K and their sinks at 300K and 250K respectively.  Which engine is more efficient?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

A is more efficient than B.

Answered by | 04 Jun, 2014, 03:23: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
Show four steps of carnot engine in P – V graph write the equation of each step and obtain the work done by the system. Also obtain the efficiency of a carnot engine.
Asked by juzarsiddhapurwala | 07 Mar, 2021, 10:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
State the conditions which must be fulfilled to utilize heat into useful work.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Can a room be cooled by leaving the door of an electric refrigerator open?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Two ideal heat engines A and B have their sources at 600K and 400K and their sinks at 300K and 250K respectively.  Which engine is more efficient?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Define efficiency of a heat engine.  Also draw the symbolic representation of a heat engine.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What does a heat engine do? Name two types of heat engines. Give one example of each.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
(a) What is a refrigerator?  Explain its principle by a schematic diagram.  Name the gas commonly used in refrigerators? (b)  In the household refrigerators, name the agency that does the work.  
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Explain the following terms in context with a heat engine: (i)  Hot reservoir (or source) (ii)  Cold reservoir (or sink) (iii)  Working substance (iv)  Mechanical parts
Asked by Topperlearning User | 17 Apr, 2015, 01:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Refrigerator P works between - 10oC and 27oC, while refrigerator Q works between -27oC and 17oC. Both of them remove 2000 J heat from the freezer. Which of the two is a better refrigerator?
Asked by Topperlearning User | 17 Apr, 2015, 01:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
In a refrigerator, heat is transferred from inside at 277K to a room at 300K.  How many joules of heat will be delivered to the room for each joule of electric energy consumed ideally?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×