The ignition of the charge in spark ignition engine before spark occurs in spark plug, is known as
A.auto-ignition
B.pre-ignition
C.detonation
D.none of the above
Category: Engineeeing Mcqs
If you want to stop the car in the shortest distance on an icy road, you should
A.push hard the brakes to lock the wheels
B.push just hard enough to prevent slipping
C.pump’ the brakes
D.not apply the brakes
when atoms are hold together by the sharing of valence electrons
A.They form a covalent bond
B.The valence electrons are free to move away from the atom
C.Each shared electron leaves a hole
D.Each atom becomes free to move
E.None of the above
Under Gantt incentive plan the wages are calculated on
A.piece basis
B.group average basis
C.hourly basis
D.None of the above
Plastic are
A.Good conductors of heat and bad conductors of electricity
B.Bad conductors of heat and good conductors of electricity
C.Good conductors of heat as well as electricity
D.Bad conductors of heat as well as electricity
E.Semi-conductors
1 N/m2 pressure is equivalent to
A.1 pascal
B.10-5 bar
C.10-2 kg/m sec2
D.7.5 x 10-3 mm Hg
E.Any of the above
Which one of the following will have least value of thermal conductivity?
A.Copper
B.Silver
C.Glass
D.Water
E.Air
Rough surface of casting may result from
A.high permeability of sand
B.large grain size
C.soft ramming
D.any of the above
The electric furnace is used for the manufacture of elemental phosphorus from phosphate rock. The electrodes are made of
A.carbon
B.aluminium
C.zinc
D.copper
The Erichsen cupping number of a sheet metal indicates its
A.Toughness
B.Surface roughness
C.Hardness
D.Ductility
E.Drawing quality
