Brackish taste of water is due to
A.Chlorides of sodium
B.Fluorides of sodium
C.Turbidity
D.Dead bacteria
E.Any of the above
Category: Engineeeing Mcqs
For values of compressibility factor (Z) less than 1 the volume of a real gas
A.is always greater than the volume predicted by ideal-gas law
B.is always less than the volume presicated by ideal-gas law
C.is always equal to the volume predicted by ideal gas law
D.may be less than equal to or greater than the volume predicted by ideal-gas law depending on the nature of the gas
Which one of the following is a wrong staement?
A.Scavenging is the process of removing the burnt gas from the engine cylinder by fresh charge coming into cylinder from the crank-case
B.The power developed in four stroke I.S. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is one-half
C.Instead of values, ports are used in case of two-stroke I.C. engines
D.In case of four stroke I.C. engines, the exhaust gases are driven out from engine cylinder by fresh charge of the fuel entering the cylinder
A Foreman of an automobile workshop wants to measure the temperature inside the piston of a car, whose temperature will be of the order of 700?C (accurate upto 1?C). The best thermometer to use is
A.Platinum resistance thermometer
B.Thermo electric thermometer
C.Constant volume hydrogen thermometer
D.Constant volume nitrogen thermometer
E.Optical pyrometer
Which method can be used for heating wood?
A.Flame heating
B.Resistance heating
C.Dielectric heating
D.Radiation heating
E.Any of the above
Which of the following is wrong:
A.Rough surfaces are better radiators than smooth surfaces
B.Highly polished mirror like surfaces are very good radiators
C.Black surfaces are better absorbers than white ones
D.Black surfaces are better radiators than white ones
Which of the following device can be used to measure temperatures of hot bodies radiating energy in visible spectrum
A.Thermopile
B.Piezometer
C.Bolometer
D.Optical pigometer
E.Planimeter
Heavy water is used in nuclear reactors to
A.cool the reactor
B.facilitate the release of neutrons
C.control fission
D.slow down the speed of neutrons
Which dimensionless number correlates the relative thickness of the hydrodynamic and thermal boundary layers?
A.Prandlt number
B.Nusselt number
C.Crash off number
D.Mach number
