Constrocops Design Services

What is the difference between
scavenging and supercharging ?
Ans: Scavenging is process of flushing
out burnt gases from engine cylinder
by introducing fresh air in the
cylinder before exhaust stroke ends.
Supercharging is the process of
supplying higher mass of air by
compressing the atmospheric air.
2.What is pitting ? How it is caused ?
Ans: Non uniform corrosion over the
entire metal surface, but occuring
only in small pits is called pitting. It
is caused by lack of uniformity in
metal.
3.Why large boilers are water tube
type ?
Ans: Water tube boilers raise steam
fast because of large heat transfer
area and positive water circulation.
Thus they respond faster to
fluctuations in demand. Further
single tube failure does not lead to
catastrophy.

1.)When Coriolis component is
encountered ?
Ans: When a point moves along a
path that has rotational motion.
2.)What is the difference between
mechanical advantage and velocity
ratio ?
Ans: Mechanical advantage is the
ratio of load lifted and the effort
applied. Velocity ratio is the ratio
between the distance moved by the
effort applied and the distance
moved by the load lifted.
3.)What happens if gasoline is used
in a Diesel engine?Diesel engine will
work ?
Ans:No, It will not work,as the
Compression ratio of Petrol engine is
6 to 10 & that of Diesel engine is 15
to 22. Thus on such high
compression, gasoline gets highly
compressed & it may blast.
4.)What is Difference between
Hardness and Toughness?
Ans. Toughness is the ability of a
material to absorb energy.
Hardness is the ability of a material
to withstand wear.

QUESTION:-
Heat transfer by radiation mainly
depends upon
(a) its temperature
(b) nature of the body
(c) kind and extent of its surface
(d) all of the above
(e) none of the above

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'Naam bol ?'
Ladka :
Galti ho gayi Sir...
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Naam Bol
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Sorry sir Iss baar jane do dobara
nahi hoga
Police :
Abe Naam bolta hai ki bike detain
karu..
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"Trikulavattyy Thekkeparambli
Venkateshwara Swami"
Police (book band karke) : chal nikal
beta !
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