cT i they are F if they are fase Read the following statemen

c\"T i they are \"F if they are fase. Read the following statements and write they are true or Irue or \" (a) The maximum pressure in the ideal Oto cycle can be determined at the end of the pressure in the ideal Otto eycle can be determined at the end of the compression process directly by the combustion chamber must be the same refrigerant used in the low-pressure loop household refrigerators. (b) In the combined gasvapor power cycle, the heat energy for steam generation is provided (c) in the Multistage compression refrigeration system, the refrigerant in the high-pressure l (d) Recause ammonia is the low-cost refrigeraal, it is commonly used as the working fluid in (e The cogencration plani produces both electricity and procs heat using energy from the same thermal reservoir (f) The power output of a gas-turbine cycle and Rankine cycle can be increased throughthe of multistage expansion with rcheating. (g) In the Rankine cycle, lowering the condenser pressure results in a reduction in thermal efficiency of the cycle, and at the same time leads to an increase in moisture content of steam exiting the turbinc. (h) The ideal vapor-comspression refrigeration cycle consists of four processes: isentropic compression, constant-pressure heat rejection, isentropic expunsion, and constant-pressure heat addition. (i) The deviation of actual gas-turbine cycles from the ideal cycles is a result of the pressure drop in the associated heal exchangers and the mechanical friction in the turbine and G) The coopression ratio of dicsel engine is defined by the eylinder velumes before and after the combustion proccs (k) Spark plug is the key component for initiating the internal combustion in all types of () The COP of a cascade zefrigeration system is always grouter than the COr of a simple (un) The maltipurpose retrigerauon syaten with a single compressor is commenly used to n) The vapor power cydles always iavolve the phase-change processes of working fuid (o) In the ip native Rankise cycle, the open feedwater beater (FW 1HIves as a mutu vagotom pression cycle rating between the same pressure linut remove beat from dhe relrigcrated spaces at more thaa one temperature. obewhere the aloas extracted from the turbine directly mixes with the feedw ater fho epsos the combined fluid leaves as the saturatod liquid-vapor misture

Solution

1.false

2. true

3.true

4.true

5.false

6.true

7.false

8.true

9.false

10.true

11.true

12.false

13.true

14.true

15.true