Q 1 In an air standard Diesel Cycle, the

compression ratio is 14, the pressure

and temperature at the beginning of

compression are: 1 bar and 28°C,

respectively. Heat is added until the

temperature at the end of constant-

pressure process is 1453°C. Calculate

the heat supplied in, kJ/kg of airS

Q 2 At the beginning of compression in an air-

standard Diesel Cycle, P₁=1 bar, V₁= 0.015 m³,

and T₁= 18°C. The compression ratio is 16 and

the maximum temperature is 1095°C. Determine

the cut-off ratio (rc).

Q 3 At the beginning of compression in

an air-standard Diesel Cycle,

P₁=1.0 bar, V₁= 0.015 m³, and T₁=

319 K. The compression ratio is

17.7 and the maximum temperature

is 1443 K. Determine the net work,

in kJ.

Q 4 An air-standard dual cycle has a

compression ratio of 14, and

compression begins at 100 kPa, 25°C.

The maximum pressure is 79 bar. The

heat transferred to air at constant

pressure is equal to that at constant

volume. Estimate the cycle efficiency,

in %.