When visible light is scattered by air molecules which wavelengths are scattered the leave?
A.Violet
B.Yellow
C.Blue
D.Red
Category: Engineeeing Mcqs
With no excess air flue gas from the complete and perfect combusion of methane world contain
A.11.7% N2 and 88.3% CO2 by volume
B.11.7% CO2 and 88.3% N2 by volume
C.24.8% CO2 and 75.2% N2 by volume
D.24.8% N2 and 75.2% CO2 by volume
The linear characteristics of valve is
A.In which the length of valve is more than 10 times the width
B.In which the longest parameter of valve is not less than 20 times the widest part of the valve
C.In which the valve steam operates linearly
D.One in which the flow is directly proportional to the valve lift
E.None of the above
Careful handling of fuel is essential for which of the following power plant?
A.Hydro-electric power plant
B.Diesel engine power plant
C.Gas turbine power plant
D.Nuclear power plant
E.Steam power plant
In anti-ferromagnetic materials the spin moments associated with two sets of atoms are aligned
A.Anti-parallel to each other
B.Parallel to each other
C.Random to each other
D.Anti-parallel but of unequal magnitudes
E.None of the above
A non-dimensional number which generally finds application in mass transfer problems is
A.Stanton number
B.Mach number
C.Graetz number
D.Grashoff number
E.Weber number
The numerical value of gc. Newtons law proportionality factor is
A.32.174 lbm.ft/lbf.s2
B.9.806 kg.m/kgf.s2
C.1 kg.m/N.s2
D.any of these answers
The emissive power of a body depends on
A.Nature of body
B.Temperature of body
C.Physical nature
D.All of the above
E.None of the above
Ignition of liquid fuel at its fire point would cause
A.continuous combustion
B.a momentary flash
C.no combustion
