Home Engineering Thermodynamics (91-100)

Thermodynamics (91-100)

Engineering By · June 29, 2022 · 1 Comment
91.  The number of processes in a Rankine cycle is
A. Two B. Three
C. Four D. Five
E. Six    

Answer & Explanation

Answer: Option C

Explanation:

View Answer Workspace Report Discuss in Forum
92.  If a process can be stopped at any stage and reversed so that the system and surroundings are exactly restored to their initial states, it is known as
A. Adiabatic process B. Isothermal process
C. Reversible process D. Thermodynamic process
E. Ideal process    

Answer & Explanation

Answer: Option C

Explanation:

View Answer Workspace Report Discuss in Forum
93.  A process which does not dissipate available energy is known as
A. Adiabatic process B. Isothermal process
C. Ideal process D. Frictionless process
E. Energyless process    

Answer & Explanation

Answer: Option C

Explanation:

View Answer Workspace Report Discuss in Forum
94.  Which is incorrect statement about the reversible process?
A. A reversible process is ideal B. A reversible process must pass through a continuous series of equilibrium states
C. A reversible process when undone, will leave no history of the events in the surroundings D. A reversible process must pass through the same states on the reversed path as were initially visited on the forward path
E. None of the above    

Answer & Explanation

Answer: Option E

Explanation:

View Answer Workspace Report Discuss in Forum
95.  Brayton cycle cannot be used in reciprocating engines even for same adiabatic compression ratio and work output because
A. Otto cycle is more efficient B. Brayton cycle is less efficient
C. Brayton cycle is for slow speed engines D. Brayton cycle requires large air-fuel ratio
E. Large volume of low pressure air cannot be efficiently handled in reciprocating engines    

Answer & Explanation

Answer: Option E

Explanation:

View Answer Workspace Report Discuss in Forum
96.  The cycle generally used for gas turbines is
A. Otto cycle B. Dual cycle
C. Carnot cycle D. Rankine cycle
E. Brayton cycle    

Answer & Explanation

Answer: Option E

Explanation:

View Answer Workspace Report Discuss in Forum
97.  The number of degrees of freedom in case of triatomic gases is
A. 2 B. 3
C. 4 D. 5
E. 6    

Answer & Explanation

Answer: Option E

Explanation:

View Answer Workspace Report Discuss in Forum
98.  In case of ideal triatomic gas, the ratio of specific heats Cp/Cv would be
A. 1 B. 1.33
C. 1.4 D. 1.41
E. 1.67    

Answer & Explanation

Answer: Option B

Explanation:

View Answer Workspace Report Discuss in Forum
99.  If a closed circuit is made of two dissimilar metals, an electric current flows in the circuit whdn the two junctions are maintained at different temperatures. This phenomenon is known as
A. Peltier effect B. Seeback effect
C. Thomson effect D. Maxwell’s effect
E. Faraday’s effect    

Answer & Explanation

Answer: Option B

Explanation:

View Answer Workspace Report Discuss in Forum
100.  Antifreeze chemicals are
A. Same as refrigerants B. Those which are added to refrigerants for better performance
C. Those which lower down the freezing points of liquids D. Those which do not freeze at all
E. Always in liquid state even at low temperatures    

Answer & Explanation

Answer: Option C

Explanation:

View Answer Workspace Report Discuss in Forum




Main Page

imran khan

Related Posts

Which of following statement is wrong

A mortise gauge is a

In a cold chamber die casting machine, only non-ferrous alloys with __ are casted.

The current in electric resistance welding can be regulated by

The cutting edge of a chisel should be

Most of the oxy-acetylene welding is done with

In electric resistance welding, voltage required for heating is

For welding plates of thickness more than 12.5 mm, its edges

This Post Has One Comment

  1. Pingback: Thermodynamics (81-90) - Just Mcqs

Leave a Reply

Your email address will not be published. Required fields are marked *