If the rate of heat flow in aboves case remains constant, the ratio of temperature difference (?t1) (?t2) would be
A.1 ; 4
B.1 ; 8
C.8 ; 1
D.16 ; 1
E.1 ; 16
Category: Mechanical Engineering Mcqs
Spiral flutes are provided on drill bits to
A.Help from the cutting edge of the drill point
B.Curl the chip tightly for easier removal
C.Provide passage for coolant supply
D.All of the above
E.None of the above
A pit furnace can be used for the melting of
A.cast iron
B.brass
C.aluminium
D.all of the above
Gum content of petroleum fuels is mainly due to
A.concentration of sulphides and disulphides
B.evaporation loss of lighter fractions
C.oxidation of unsaturated bydrocarbons
D.All of the above
In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool
A.Carbon steel
B.High speed steel
C.Carbide
D.Diamond
E.Wood
Machine loading means
A.Total load of machine + load of job
B.Load of machine + load of heaviest job that machine can take
C.Load of machine + load of heaviest job that machine can take
D.Electrical load required for the machine motors
E.Amount of work assigned to a machine
Which of the following statements correct?
A.Rockwell scale B in used for hard metals
B.Rockwell scale C is used for hard metals
C.Rockwell scale C is used for soft metals
D.Rockwell scale A is used for hard metals
Standing orders contain
A.History of management of a factory
B.Names of directors of company
C.List of important officers of a company
D.Serve conditions, leave, discipline rules etc., for officers
E.Service conditions, leave, discipline rules etc., for workers
Samples of exhaust gases from following engines have been collected:
A.Petrol engine
B.Diesel engine
C.Gas engine
D.Jet propulsion unit
