Transmission of heat by molecular collision is
A.Conduction
B.Convection
C.Radiation
D.Scattering
E.Transmission
Category: Engineeeing Mcqs
The pitch point on a cam is
A.Any point on pitch curve
B.The point on cam pitch circle having the maximum pressure angle
C.Any point on pitch curve
D.A point at a distance equal to pitch circle radius from the centre
E.None of the above
Phenol and formaldehyde are polymerised to a resultant product known as
A.PVC
B.Bakelite
C.Polyester
D.None of the above
The most efficient cross-section for a channel is
A.Semi-circular
B.Square
C.Rectangular
D.Triangular
E.Half hexagon in the form of a trapezoid
In ultrasonic welding the frequency range is generally
A.100 – 4000 cps
B.4000 – 20,000 cps
C.20,000 – 80,000 cps
D.80,000 – 800,000 cps
E.800,000 – 5000,000 cps
The population of a city was 6.4 million at the beginning of a becade and rose to 8.1 million by the end of the decade. Assuming the rate of growth to be constant, the size of population in the middle of the decade was
A.6.25 million
B.6.75 million
C.7.25 million
D.7.75 million
A house valued at Rs. 47,500 is insured for 4/5 of its value at 1
A.475
B.Rs. 592.50
C.Rs. 950
D.Rs. 1187.50
E.Rs. 1475
Hot spots are
A.Defects in S.I.engines
B.The hottest spots in engines
C.The spots where heavier fractions of fuel are vaporised
D.Do not exist in engines
E.Hottest point within engine cylinder
Carbon content of grey iron is generally
A.1 – 2 percent
B.2-2.5 percent
C.2.5-3 percent
D.3-3.5 percent
E.4.5 percent
A man is standing ner the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platorm will decrease if he
A.jumps out from that platform
B.moves towards the axis of rotation
C.extends his arms outwards
D.take out his coat and throws away
