In a four stage compressor system first and third stage pressures are 1 and 9 kg/cm2 respectively. What will be the fourth stage delivery pressure
A.3 kg/cm2
B.9 kg/cm2
C.27 kg/cm2
D.81 kg/cm2
E.243 kg/cm2
Category: Engineeeing Mcqs
A suspended body is to be struck heavily without producing any reaction at the support. It should be hit at
A.Centre of gravity
B.Metacentre
C.Centroid
D.Centre of spin
E.Centre of percussion
Which of the following defect may occur due to improper design of gating system?
A.Cold shuts
B.Rough surfaces
C.Misruns
D.any of the above
Mycotoxins are poisonous chemicals produced by
A.bacteria
B.virus
C.molds
D.algae
A square type engine
A.Has geometrical shape as square
B.Has two cylinders horizontal and two cylinders vertical
C.Has operating speed as 64, 81, 100, 121, 144, 169, 196 rpm or the like
D.Has cylinder bore equal to stroke length
E.Has four cylinders with phase shift of 90? between any two consecutive cylinders
The motions of crane-hoisting, trolley traversing and bridging may be powered by
A.electric motors
B.air motors
C.hydraulic units
D.Any of the above
The fuel consumption of a diesel engine per BHP per hour is nearly
A.100 cc
B.200 cc
C.300 cc
D.400 cc
The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about
A.0.20%
B.0.40%
C.0.60%
D.1.40%
E.None of the above
In case of tractors the springs provided on rear wheel are
A.Leaf type
B.Helical
C.ombination of helical and leaft spring
D.Depend on the design
E.No spring is provided
