Q.15 If heat ‘Q1’ is absorbed at temperature ‘T’ and heat ‘Q2’ is absorbed at temperature of triple point f water, then unknown temperature of system (in K) is:
A) 273.16 C) 273.16 Q
B) 273.16 Q2/Q1 D) 273.16 Q1/Q2
A) 273.16 C) 273.16 Q
B) 273.16 Q2/Q1 D) 273.16 Q1/Q2
Q.16 The rapid escape of air from a burst tyre is an example of:
A) Adiabatic processes C) Cooling process
B) Isothermal process D) First law of thermodynamics
Q.17 Which relation exactly described the isothermal process?
A) Q = W C) Q = ̶ ΔU
B) W = ̶ ΔU D) Q = ΔU + W
Q.18 If a turbine is working as a heat engine and takes that from hot body (427 °C) and exhausts into a body at 77 °C then what is the possible efficiency?
A) 50% C) 90%
B) 70% D) 95%
A) Adiabatic processes C) Cooling process
B) Isothermal process D) First law of thermodynamics
Q.17 Which relation exactly described the isothermal process?
A) Q = W C) Q = ̶ ΔU
B) W = ̶ ΔU D) Q = ΔU + W
Q.18 If a turbine is working as a heat engine and takes that from hot body (427 °C) and exhausts into a body at 77 °C then what is the possible efficiency?
A) 50% C) 90%
B) 70% D) 95%