Minimum thermal efficiency of a steam boiler may be around ____________________ percent ?
Minimum thermal efficiency of a steam boiler may be around ____________________ percent ?
A. 25
B. 45
C. 65
D. 20
Similar Posts
For a constant volume process
Question: For a constant volume process
[A].dE = CpdT [B].
dE = CvdT [C].
dQ = dE + pdV [D].
dW = pdV Answer: Option B
Explanation:
No answer description available for this question.
Noise level inside a jet air liner in normal flight is about __________ decibels.
Question: Noise level inside a jet air liner in normal flight is about __________ decibels.
[A].80 [B].
100 [C].
125 [D].
145 Answer: Option B
Explanation:
No answer description available for this question.
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used
Question: In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used
[A].in low range of temperature differences. [B].
in high range of temperature differences. [C].
because of its low cost. [D].
to prevent corrosion of the tube bundles. Answer: Option B
Explanation:
No answer description available for this question.
Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are
Question: Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are
[A].nickel, cobalt & chromium. [B].
tungsten, chromium & cobalt. [C].
manganese, chromium & cobalt. [D].
tungsten, molybdenum & nickel. Answer: Option B
Explanation:
No answer description available for this question.
Between 230 and 370°C, blue brittleness is caused in mild steel because of the_________________?
Between 230 and 370°C, blue brittleness is caused in mild steel because of the_________________?A. Immobility of dislocation
B. Strain-ageing
C. Increase in Young’s modulus
D. Strain hardeningCv is given by
Question: Cv is given by
[A].[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.