36.

87.

38.

39.

40.

41.

42.

Rankine cycle comprises of
(A) _ two isentropic processes and two reversible constant volume processes

(B) two reversible isothermal processes and two reversible constant pressure
processes

(C) two isentropic processes and two reversible constant pressure processes

(D) two reversible constant pressure and two reversible constant volume processes

Efficiency of Otto cycle is more than that of Diesel cycle for the same compression and heat
input because, in Otto cycle

(A) combustion is at constant volume
൯) expansion and compression are isentropic
(C) maximum temperature is higher

(D) heat rejection is lower

The velocity of steam at the outlet of a nozzle under ideal conditions, for a heat drop of
500 kJ/kg will be:

(A) 1000 m/s (B) 75 m/s
(C) 1500 m/s (D) the same as the sonic velocity

As pressure increases, the enthalpy of evaporation of water :
(A) increases (B) decreases

(C) remains same (D) changes randomly

In an office, the drinking water needs are met by cooling tap water in a refrigerated water
fountain from 35 to 18°C with an average flow rate being 18 kg/h. If the COP of this
refrigerator is 3.1, the required power input to this refrigerator is :

(A) 200 W (B) 1000W
(0) 115W (D) 40W

When the barometer reads 750.0 mm of mercury, a pressure of 10 kPa suction at that
location is equivalent to :

(^) 10.2 m of water (abs) (B) 9.87 m of water (abs)
(C) 4.3 kPa (abs) (D) 90 kPa (abs)

Tf the unit of dynamic viscosity of a fluid is stated as Poise, one unit of poise is equivalent to :

(A) 10 Pas ஐ ۶

(൭ 10 472 /8 (D) നടക:

9 231/2023
[P.T.0.]