156) hematite is an ore of which metal? A) chrome B) iron C) nickel D) silver E) look
Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
155) Between which parts does a cold junction casting failure occur?
Mold - lower grade
Mold – ladle
spade - mold
Runner - mold
Mold – top grade
156) hematite is an ore of which metal?
A) chrome
B) iron
C) nickel
D) silver
E) look
157) Possible physical shapes of phases impregnated in composite material
which of the following is(s)
(a) fiber,
(b) particle
(c) particle
a) all
B) a and b
C) b and c
D) only b
E) only a
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