Temperature Entropy Plot MCQs : This section focuses on the "Temperature Entropy Plot". These Multiple Choice Questions (MCQs) should be practiced to improve the Temperature Entropy Plot skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A Carnot cycle has following processes.
A. 4 reversible isotherms
B. 4 reversible adiabatics
C. 2 reversible isotherms and 2 reversible adiabatics
D. none of the mentioned
Question 2
A reversible adiabatic process is an isentropic process.
A. TRUE
B. FALSE
Question 3
According to the principle of Caratheodory, the first law in differential form is written as dQ=Adx+Bdy+Cdz.
A. TRUE
B. FALSE
Question 4
For a reversible heat transfer and process being adiabatic, which of the following is true?
A. dQ=0
B. dS=0
C. S=constant
D. all of the mentioned
Question 5
For adiabatic, reversible transition,
A. Adx+Bdy+Cdz=-1
B. Adx+Bdy+Cdz=1
C. Adx+Bdy+Cdz=0
D. none of the mentioned
Question 6
For quasi-static, adiabatic path
A. Adx+Bdy+Cdz=TdS
B. Adx+Bdy+Cdz=1
C. Adx+Bdy+Cdz=0
D. none of the mentioned
Question 7
Net work in a Carnot cycle is given by (T1=temperature of heat addition and T2=temperature of heat rejection)
A. (T2-T1)(S1-S4)
B. (T1-T2)(S1-S4)
C. (T1-T2)(S4-S1)
D. none of the mentioned
Question 8
The area under the curve ∫TdS is equal to the
A. work done
B. heat transferred
C. internal energy change
D. none of the mentioned
Question 9
The infinitesimal change in entropy dS due to reversible heat transfer dQ at temperature T is dS=dQ/T.
A. TRUE
B. FALSE
Question 10
Which of the following statement is true?
A. for reversible isothermal heat transfer, Q=t(Sf-Si)
B. for reversible adiabatic process, S=constant
C. both of the mentioned
D. none of the mentioned