Physics Fsc Part 1 Chapter 11 Online Test With Answers

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Physics Fsc Part 1 Chapter 11 Online Test

Sr. # Questions Answers Choice
1 Unite of thermodynamics scale of temperature is. Centigrade Fahrenheit Kelvin Celsius
2 Value of triple point of water is given as. Zero K 100 K 273.16 K 373.16 K
3 Efficiency of a heat engine working between 27 oC and 32 oC will be. 50% 90% 40% 62%
4 If the temperature of sink is absolute zero then the efficiency of heat engine engine should be. 100% 50% Infinite zero
5 If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be. 25% 50% 70% 100%
6 A Carnot engine has an efficiency of 50% when its sink temperature is at 27 oC. The temperature of source. 273<sup> o</sup>C 300 <sup>o</sup>C 327 <sup>o</sup>C 373 <sup>o</sup>C
7 The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is. 0 <sup>o</sup>C 0 K 0 <sup>o</sup>F 100 K
8 A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is. 100% 70% 60% 50%
9 In case the work done in zero. Constant pressure Constant volume Constant temperature Constant mass
10 The measure of hotness or coldness of a substance is. Temperature Heat Internal energy Energy
11 The Carnot cycle can be shown by which graph P - T graph P - V Graph V- T graph PV -T graph
12 Carnot cycle consists of. Two steps Three steps Four steps Five steps
13 The curve representing an adiabatic process is called. An adiabatic An isotherm Both of these None of these
14 An ideal heat engine can only be 100% efficient if its cold temperature reservoir is at. 0 K 0 <sup>o</sup>C 100 K 100 <sup>o</sup>C
15 An ideal reversible heat engine has 100% efficiency Highest efficiency 80% 90%
16 For working of heat engine, there must be. A source A sink either of these Both of these
17 The efficiency of heat engine whose sink is at 17 oC and source at 200 oC is. 38% 63% 80% 90%
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