Weld spatter defect in welding is generally the result of
A.Using too high welding current
B.Using too low welding current
C.Low voltage
D.High voltage
E.None of the above
Category: Mechanical Engineering Mcqs
The hardness limit for portable water ranges between
A.10 – 50 ppm
B.50 – 65 ppm
C.75 – 117 ppm
D.150 – 250 ppm
E.300 – 700 ppm
The thermal efficiency of a dual cycle engine with fixed compression ratio and fixed quantity of het and with increase in pressure ratio, will
A.Increase
B.Decrease
C.Not change
D.Depends on another factors
E.None of the above
Pneumatic tyres are not used for providing
A.speed
B.comfort
C.traction
D.friction
A pilot tube is used for the measurement of
A.Pressure
B.Velocity
C.Viscosity
D.Surface tension
E.Flow rate
The compressor used in gas turbine is usually
A.Single stage reciprocating compressor
B.Multistage reciprocating compressor
C.Screw compressor
D.Lobe type compressor
E.Multistage axial flow compressor
Hard steels and non-ferrous metal do not exhibit a definite yield point when pulled in the testing machine and for such cases a better measure of their elastic properties is defined by
A.Yield point stress
B.Yield point strain
C.Proof stress
D.Ultimate stress
E.None of the above
First aid for an electric shock victim is
A.Bandage
B.Massage
C.Pouring water on body
D.Rubbing the skin
E.Artificial respiration
Which one of the following methods cannot be used for producing external threads?
A.One lathe
B.By dies
C.By tap
D.By rolling
In a centre lathe gear box for changing spindle speeds the provision for speeds is made in
A.Arithmetical progression
B.Geometrical progression
C.Square progression
D.Cubical progression
E.Random members
