Engineering Thermodynamics - Practice Test

[#271] The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.

(A) Zeroth

(B) First

(C) Second

(D) Third

Correct Answer

(B) First

[#272] Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

(A) It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

(B) It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

(C) It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.

(D) None of the above

Correct Answer

(B) It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

[#273] Which of the following is the correct statement of the second law of thermodynamics?

(A) There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy

(B) It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source

(C) It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

(D) All of the above

Correct Answer

(D) All of the above

[#274] Diesel cycle consists of following four processes

(A) Two isothermal and two isentropic

(B) Two isentropic and two constant volumes

(C) Two isentropic, one constant volume and one constant pressure

(D) Two isentropic and two constant pressures

Correct Answer

(C) Two isentropic, one constant volume and one constant pressure

[#275] Brayton cycle consist's of following four processes

(A) Two isothermal and two isentropic

(B) Two isentropic and two constant volumes

(C) Two isentropic, one constant volume and one constant pressure

(D) Two isentropic and two constant pressures

Correct Answer

(D) Two isentropic and two constant pressures

Engineering Thermodynamics - Study Mode

[#271] The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.

Correct Answer

[#272] Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

Correct Answer

[#273] Which of the following is the correct statement of the second law of thermodynamics?

Correct Answer

[#274] Diesel cycle consists of following four processes

Correct Answer

[#275] Brayton cycle consist's of following four processes

Correct Answer