B:-very low dryness fraction upto 0.7
C:-very high dryness fraction upto 0.98
D:-dryness fraction of low-pressure steam
Correct Answer:- Option-C

Question6:-Entropy of 1 kg of wet steam is given by

Avs, + ae
- அர்‌
ಲ್‌
D:-s, tepslog,

Correct Answer:- Option-A

Question7:-A rigid vessel with a volume of 1om3 contains a water vapor mixture at
400 kPa at 60 percent quality. The pressure is lowered to 300 kPa by colling the
vessel. Find mass of gas (mg) at state 2.

A:-16.5 kg
B:-19.5 kg
C:-23.8 kg
D:-29.2 kg
Correct Answer:- Option-A

Question8:-The point that connects saturated-liquid line to saturated vapor line is
called

A:-Triple point

B:-Critical point
C:-Superheated point
D:-Compressed liquid point
Correct Answer:- Option-A

Question9:-The specific volume of water at 200°C and at 80 percent quality

A:-0.06 mifkg

B:-0.08m3/kg

C:-0.1 m—/kg

D:-0.12 m-+kg

Correct Answer:- Option-C

Question10:-Two kilograms of steam are contained in a piston cylinder
arrangement. The 20 mm diameter 40 kg piston is allowed to rise with no friction
until the temperature reaches 260°C. The final volume is

A:-0.13 m3
B:-0.29 m3
C:-0.34 ms