## A petrol engine fuel that knocks at a low speed

A.has a high octane rating
B.may not knock at high speed
C.will always knock at high speed
D.will have low fire point

A.2
B.3
C.4
D.5
E.6

## A sterling cycle consists of

A.Two isothermal and two adiabatic processes
B.Two adiabatic and two isentropic processes
C.Two adiabatic and two constant pressure processes
D.Two constant volume and two constant pressure processes
E.Two isothermal and two constant volume processes

## The molecular volume of any perfect gas at 600 x 103 N/m3 and 27?C will be

A.2.085 m3/kg mol
B.4.17 m3/kg mol
C.41.7 m3/kg mol
D.85.3 m3/kg mol
E.47.7 m3/kg mol

A.S/T
B.T/S
C.Cp/T
D.T/Cp
E.90?

A.PV = RT
B.PV = mRT
C.PV = (RT)m
D.PVn = constant
E.PV = constant

A.Mass
B.Density
C.Viscosity
D.Temperature

## The area of pv diagram for a Carnot cycle represents

A.Work done
B.Temperature drop
C.Enthalpy drop
D.Total heat supplied
E.Volume and pressure ratios.

A.4P
B.P
C.2P

A.3.75 atm
B.4.0 atm
C.4.5 atm
D.5.0 atm