Description : Thermal power plant works on (a) Carnot cycle (b) Joule cycle (d) Rankine cycle (d) Otto cycle (e) Brayton cycle.
Last Answer : Answer : c
Description : Reversed joule cycle is called (a) Carnot cycle (b) Rankine cycle (c) Brayton cycle (d) Bell Coleman cycle (e) Dual cycle.
Description : It is used for gas turbines which operates on an open cycle where both the compression and expansion processes take place in rotating machinery. a. Dual Cycle b. Otto Cycle c. Carnot Cycle d. Brayton Cycle
Last Answer : Brayton Cycle
Description : The following cycle is used for air craft refrigeration (a) Brayton cycle (b) Joule cycle (c) Carnot cycle (d) Bell-Coleman cycle (e) Reversed-Brayton cycle.
Last Answer : Answer : e
Description : A Bell-Coleman cycle is a reversed of which the following cycles? a. Stirling cycle b. Joule cycle c. Carnot cycle d. Otto cycle
Last Answer : Joule cycle
Description : Which of the following cycles has maximum efficiency (a) Rankine (b) Stirling (c) Carnot (d) Brayton (e) Joule.
Description : Which of the following cycle is used in vapor cycle power plant? a. Brayton cycle b. Diesel cycle c. Ericson cycle d. Rankine cycle
Last Answer : Rankine cycle
Description : Air refrigeration operates on (a) Carnot cycle (b) Reversed Carnot cycle (c) Rankine cycle (d) Brayton cycle.
Last Answer : Ans: d
Description : The vapour compression refrigerator employs the following cycle (a) Rankine (b) Carnot (c) Reversed Carnot. (d) Brayton
Last Answer : Ans: c
Description : Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle. (A) Joule (B) Carnot (C) Rankine (D) Brayton
Last Answer : (C) Rankine
Description : What states that thermal efficiencies of all reversible heat engines operating between the same two reservoirs are the same and that no heat engine is more efficient than a reversible one operating between the ... A. Ericson principle B. Carnot principle C. Otto principle D. Stirling principle
Last Answer : Carnot principle
Description : What is the highest efficiency of heat engine operating between the two thermal energy reservoirs at temperature limits? A. Ericson efficiency B. Otto efficiency C. Carnot efficiency D. Stirling efficiency
Last Answer : Carnot efficiency
Description : In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state. a. Rankine Process b. Carnot Cycle c. Joule-Thomson process d. Refrigeration process
Last Answer : Joule-Thomson process
Description : The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that (a) carnot cycle can't work with saturated steam (b) heat is supplied to water at temperature ... heat at two places (d) rankine cycle is hypothetical (e) none of the above.
Last Answer : Answer : b
Description : The most efficient cycle that can operate between two constant temperature reservoir is the _________. a. Otto Cycle b. Lazare Cycle c. Isothermal Cycle d. Carnot Cycle
Last Answer : Carnot Cycle
Description : A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as A.Carnot cycle B.Stirling cycle C.Otto cycle D.Diesel cycle
Last Answer : Answer: D
Description : What power cycle is used in jet engines? w) Stirling x) Rankine y) Otto z) Brayton
Last Answer : ANSWER: Z -- BRAYTON
Description : A four cycle internal combustion automobile engine operates on what kind of cycle? w) Rankine x) Otto y) Brayton z) Joule
Last Answer : ANSWER: X -- OTTO
Description : The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will (a) increase (b) decrease (c) remain unchanged (d) increase/decrease depending on ap-plication (e) unpredictable. “
Description : Brayton cycle consists’ of following four processes (a) two isothermals and two isentropics (b) two isentropics and two constant volumes (c) two isentropics, one constant volume and one constant pressure (d) two isentropics and two constant pres-sures (e) none of the above.
Last Answer : Answer : d
Description : Which of the following engines was introduced by a German engineer, Nickolas Otto? a. Gasoline engine b. Diesel engine c. Gas turbine d. Thermal engine
Last Answer : Gasoline engine
Description : Which of the following best describes both Stirling and Ericson engines? a. Internal combustion engine b. External combustion engine c. Diesel cycle d. Rankine cycle
Last Answer : External combustion engine
Description : What statement of the second law of thermodynamics states that it is impossible to build a device that operates in a cycle and produces no effect other than the transfer of heat from a lower- ... A. Kelvin-Planck statement B. Clausius statement C. Kelvin statement D. Rankine statement
Last Answer : Clausius statement
Description : Vapour compression refrigeration is some what like (a) Carnot cycle (b) Rankine cycle (c) reversedCamot cycle (d) reversed Rankine cycle
Last Answer : Ans: C
Description : Gasoline and Diesel Engines are best described by the _________. a. Otto Cycle b. Burnign Cycle c. Shikki Cycle d. Shapa R’ Elli Cycle
Last Answer : Otto Cycle
Description : Otto cycle is also known as A. constant pressure cycle B. constant volume cycle C. constant temperature cycle D. constant temperature and pressure cycle
Last Answer : Answer: B
Description : Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle A. combustion is at constant volume B. expansion and compression are isentropic C. maximum temperature is higher D. heat rejection is lower
Description : When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency. A. zero B. 1/5 C. 4/5 D. 1
Last Answer : Answer: A
Description : The efficiency of Diesel cycle approaches to Otto cycle efficiency when A. cut-off is increased B. cut-off is decreased C. cut-off is zero D. cut-off is constant
Last Answer : Answer: C
Description : A cycle consisting of two adiabatics and two constant pressure processes is known as (a) Otto cycle (b) Ericsson cycle (c) Joule cycle (d) Stirling cycle (e) Atkinson cycle.
Description : For same compression ratio and for same heat added (a) Otto cycle is more efficient than Diesel cycle (b) Diesel cycle is more efficient than Otto cycle (c) efficiency depends on other factors (d) both Otto and Diesel cycles are equally efficient (e) none of the above.
Last Answer : Answer : a
Description : Otto cycle consists of following four processes (a) two isothermals and two isentropics (b) two isentropics and two constant volumes (c) two isentropics, one constant volume and one constant pressure (d) two isentropics and two constant pres-sures (e) none of the above.
Description : What is a heat engine that operates on the reversible Carnot cycle called? A. Carnot heat engine B. Ideal heat engine C. Most efficient heat engine D. Best heat engine
Last Answer : Carnot heat engine
Description : The Carnot cycle is composed of ______ processes. A. One isothermal and one adiabatic B. One isothermal and two adiabatic C. Two isothermal and one adiabatic D. Two isothermal and two adiabatic
Last Answer : Two isothermal and two adiabatic
Description : The Carnot cycle is composed of how many reversible processes? A. 2 B. 3 C. 4 D. 5
Last Answer : 4
Description : Who proposed the Carnot cycle? A. Sammy Carnot B. Sonny Carnot C. Sadi Carnot D. Suri Carnot
Last Answer : Sadi Carnot
Description : Carnot cycle is the best known reversible cycle which was first proposed in what year? A. 1842 B. 1824 C. 1832 D. 1834
Last Answer : 1824
Description : Which is the incorrect statement about Carnot cycle? A. It is used as the alternate standard of comparison of all heat engines. B. All the heat engines are based on Carnot cycle. C. It provides concept of maximising work output between the two temperature limits. D. all of the above
Description : During which of the following process does heat rejection takes place in Carnot cycle? A. Isothermal expansion B. Isentropic expansion C. Isothermal compression D. Isentropic compression
Description : The efficiency of Joule cycle is A. greater than Carnot cycle B. less than Carnot cycle C. equal to Carnot cycle D. none of these
Description : The efficiency of Stirling cycle is __________ Carnot cycle. A. greater than B. less than C. equal to
Description : Which of the following cycles is not a reversible cycle (a) Carnot (b) Ericsson (c) Stirling (d) Joule (e) none of the above.
Description : If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle (a) more (b) less (c) equal (d) depends on other factors (e) none of the above.
Description : Carnot cycle is (a) a reversible cycle (ft) an irreversible cycle (c) a semi-reversible cycle (d) a quasi static cycle (e) an adiabatic irreversible cycle.
Description : The efficiency of Carnot cycle is maximum for (a) gas engine (b) well lubricated engine (c) petrol engine (d) steam engine (e) reversible engine.
Description : Which of the following is an irreversible cycle (a) carnot (b) Stirling (c) ericsson (d) all of the above (e) none of the above.
Description : In a Carnot cycle, heat is transferred at (a) constant pressure (b) constant volume (c) constant temperature (d) constant enthaply (e) any one of the above.
Description : An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is (a) feasible (b) impossible (c) possible (d) possible, but with lot of sophistications (e) desirable.
Description : Carnot cycle efficiency is maximum when (a) initial temperature is 0°K (b) final temperature is 0°K (c) difference between initial and final temperature is 0°K (d) final temperature is 0°C (e) initial temperature is minimum possible.
Description : Carnot cycle efficiency depends upon (a) properties of the medium/substance used (b) condition of engine (c) working condition (d) temperature range of operation (e) effectiveness of insulating material around the engine.