A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?
A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?
A. 6
B. 18
C. 38
D. 52
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__________ of air does not increase with increase in temperature.
Question: __________ of air does not increase with increase in temperature.
[A].Density [B].
Thermal diffusivity [C].
Viscosity [D].
Thermal conductivity Answer: Option A
Explanation:
No answer description available for this question.
Creep consideration is the most important in case of the
Question: Creep consideration is the most important in case of the
[A].blades of gas turbines. [B].
steam engine flywheel. [C].
cast iron pipes. [D].
cycle chains. Answer: Option A
Explanation:
No answer description available for this question.
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_______________________?
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. NormalisingWhich of the following mainly decides the current to be employed is arc welding ?
Which of the following mainly decides the current to be employed is arc welding ?A. Electrode size
B. Plate thickness
C. Voltage across the arc
D. Welded portion length__________ is not a heat treatment process.
Question: __________ is not a heat treatment process.
[A].Cyaniding [B].
Pakerising [C].
Austempering [D].
Martempering Answer: Option B
Explanation:
No answer description available for this question.
Chromium molybdenum steel can not be welded using __________ welding.
Question: Chromium molybdenum steel can not be welded using __________ welding.
[A].thermit [B].
electrical resistance [C].
oxy-acetylene [D].
any of these Answer: Option B
Explanation:
No answer description available for this question.