Lewis number (Le) is
Question: Lewis number (Le) is
[A].
Sc x Pr
Pr x St
Sh x Pr
St x Sh
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
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Induced draft fans provided in large thermal power plant boilers have __________ blades.
Question: Induced draft fans provided in large thermal power plant boilers have __________ blades.
[A].forward curved [B].
backward curved [C].
double curved [D].
radial or straight Answer: Option B
Explanation:
No answer description available for this question.
In sulphate pulp manufacture, the pressure and temperature in the digestor is
Question: In sulphate pulp manufacture, the pressure and temperature in the digestor is
[A].10 atm., 800 °C [B].
10 atm., 170-180°C [C].
1 atm., 170 – 180°C [D].
l atm., 800°C Answer: Option B
Explanation:
No answer description available for this question.
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in ______________ tower?
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in ______________ tower?A. Wetted wall
B. Bubble cap
C. Perforated tray
D. PackedPrandtl number for water at 20°C is about ________________?
Prandtl number for water at 20°C is about ________________?A. 7
B. 70
C. 0.7
D. 150Cold working of a material results in increase in hardness, which is termed as the __________ hardening.
Question: Cold working of a material results in increase in hardness, which is termed as the __________ hardening.
[A].cold [B].
work [C].
age [D].
induction Answer: Option B
Explanation:
No answer description available for this question.
A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))
Question: A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))
[A].M(Xo – XF) [B].
M(Xo/XF) [C].
M ln(Xo/XF) [D].
MXo ln(Xo/XF) Answer: Option D
Explanation:
No answer description available for this question.