Question: More than 95% of __________ is present in corrundum.
[A].SiO2
A12O3
CaSiO2
MgO
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Addition of __________ to steel can not impart it high strength at elevated temperature.
Question: Addition of __________ to steel can not impart it high strength at elevated temperature.
[A].nickel
magnesium
silicon
manganese
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Ageing of steel refers to the
Question: Ageing of steel refers to the
[A].degradation of steel by corrosion.
failure of steel structure by overstress-ing.
return of sharp yield point in temper rolled low carbon sheet after a period of time.
decarburisation of steel by overheating.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
Question: Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
[A].5
10
20
35
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Alloys having more than 80% copper are generally more
Question: Alloys having more than 80% copper are generally more
[A].abrasion resistant.
corrosion resistant.
prone to season cracking.
machinable.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Material having maximum density is
Question: Material having maximum density is
[A].plutonium
osmium
titanium
uranium
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Fibre reinforced plastic (FRP) are
Question: Fibre reinforced plastic (FRP) are
[A].made of glass fibre and thermoplastic resins.
anisotropic.
made of thermosetting resin and glass fibre.
both ‘b’ & ‘c’
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Cast iron contains __________ percent carbon.
Question: Cast iron contains __________ percent carbon.
[A].2.5
3.75
4.75
5.25
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
From the four positions of a dice given below, find the color which is opposite to yellow ?
Question: From the four positions of a dice given below, find the color which is opposite to yellow ?
[A].Violet
Red
Rose
Blue
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
The colours adjacent to yellow are orange, blue, red and rose. Hence violet will be opposite to yellow.
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
Question: The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
[A].evaporative capacity
evaporation efficiency
thermal efficiency
steam load
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.