Buffing is
A.A process of electroplating
B.Covering a metal part with soft materials to prevent damage
C.An finishing operation in broaching
D.The process of bringing out the luster of metal
E.An etching process
Category: Mechanical Engineering Mcqs
In an axial flow compressor, the pressure rise occurs in
A.fixed blades only
B.Moving blades only
C.Both fixed and moving blades
D.none of the above
Natural error in measurement may be due to
A.Humidity
B.Temperature
C.Wind
D.Gravity
E.Any of the above
The speed ratio in case of micro gears is
A.Less than 1
B.1
C.Between 1.1 and 5
D.Between 5 and 10
E.More than 10
In a condensing steam engine
A.Condensed steam is supplied
B.Steam condenses inside cylinder
C.Steam condenses as soon as it leaves the cylinder
D.Exhaust steam is condensed in condenser
E.Exhaust steam is not recirculated
Moh’s scale of hardness has the range
A.1–3
B.1–5
C.5–10
D.1–10
E.10–15
A non-wielding support means
A.Support that does not elongate
B.Support that restores elongation after the load is removed
C.Support holds the load firmly and safely
D.Support is frictionless
E.Slope of the beam at the support is zero
The process of pulling a rod through series of decreasing diameters is known as
A.Staking
B.Stretch forming
C.Metal spinning
D.Trimming
E.Wire drawing
All of the following are souhd obsorptive materials EXCEPT:
A.Rugs
B.Mirrors
C.Carpets
D.Heavy drapes
The approximate value of allowable stress for carbon steel under static loading (in kg/cm2) is
A.500-1000
B.4000-7500
C.10000-15000
D.15000-20000
E.20000-25000
