7000+ Thermal Engineering MCQ Questions with Answers Pdf - 1

Question: 1

A system comprising a single phase is called a

(A) Homogeneous system

(B) Heterogeneous system

(C) Isolated system

(D) Open system

Question: 2

With increase in pressure

(A) Enthalpy of dry saturated steam first increases and then decreases

(B) Enthalphy of dry saturated steam remains same

(C) Enthalpy of dry saturated steam decreases

(D) Enthalpy of dry saturated steam increases

Question: 3

Absolute zero temperature is taken as

(A) 237°C

(B) 273°C

(C) -273°C

(D) -373°C

Question: 4

An isolated system

(A) Cannot transfer either energy or mass to or from the surroundings

(B) Is one in which mass within the system is not necessarily constant

(C) Is a region of constant mass and only energy is allowed to cross the boundaries

(D) Is a specified region where transfer of energy and or as take place

Question: 5

A definite area of space where some thermodynamic process takes place is known as

(A) Thermodynamic system

(B) Thermodynamic law

(C) Thermodynamic process

(D) Thermodynamic cycle