Steel is welded using the ________________ flame ?
Steel is welded using the ________________ flame ?
A. Carburising
B. Neutral
C. Oxidising
D. All A, B. & C
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In case of simple harmonic motion, displacement is proportional to the_________________?
In case of simple harmonic motion, displacement is proportional to the_________________?A. Velocity
B. Acceleration
C. Both A. & B.
D. Neither A. nor B.A hot short metal is
Question: A hot short metal is
[A].hard when hot. [B].
brittle when cold. [C].
brittle when hot. [D].
brittle under all conditions. Answer: Option C
Explanation:
No answer description available for this question.
The refrigerant freon-12 is chemically_______________________?
The refrigerant freon-12 is chemically_______________________?A. CCl2F2
B. CCl3F
C. CClF3
D. CCl4FHeating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?
Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?A. Tempering
B. Hardening
C. Annealing
D. NormalisingOut of the following, the joint produced by __________ has the lowest strength.
Question: Out of the following, the joint produced by __________ has the lowest strength.
[A].soldering [B].
welding [C].
brazing [D].
rivetting Answer: Option A
Explanation:
No answer description available for this question.
Pearlite comprises of
Question: Pearlite comprises of
[A].87% cementite & 13% Fe. [B].
87% ferrite & 13% cementite. [C].
93.33% ferrite & 6.67% C. [D].
87% ferrite & 13% C. Answer: Option B
Explanation:
No answer description available for this question.