A. 0.1 to 2
B. 5 to 7
C. 3 to 8
D. 8 to 15
Related Mcqs:
- Speed of industrial paddle agitator ranges from _____________ rpm?
A. 1 to 5
B. 20 to 100
C. 500 to 750
D. 1000 to 2000 - Pressure differential maintained across a continuous rotary vacuum filter is in the range of _______________ mm Hg column?
A. 50 to 100
B. 100 to 150
C. 250 to 500
D. 600 to 700 - Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about _______________ mm Hg (referred to a 760 mm mercury barometer)?
A. 250
B. 450
C. 650
D. 750 - The diameter of a propeller agitator used in agitation tank ranges from ____________ percent of the tank diameter and its peripheral speed is normally 300 to 500 metres/minute ?
A. 5 to 10
B. 15 to 30
C. 40 to 50
D. 55 to 75 - Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ?
A. 1.5-2.5
B. 3.5-5.5
C. 7.5-10.0
D. 10-15 - Frame thickness in the plate and frame filter press is normally in the range of ______________ inches?
A. 0.25 to 4
B. 0.25 to 8
C. 1 to 5
D. 1 to 12 - The thickness of heat transfer plates used in the plate type heat exchanger ranges from _____________ mm, pressed in a single piece provided with grooves & corrugations?
A. 0.3 to 0.8
B. 1.25 to 3.125
C. 3.5 to 7.0
D. 8 to12 - Cylindrical shell thickness of rotary drier is generally _______________ mm?
A. 2-3
B. 18-22
C. 6-8
D. 12-15 - Hold up of material in a operating rotary drier is in the range of___________________?
A. 0.05 to 0.15
B. 0.25 to 0.50
C. 0.5 to 0.8
D. 0.8 to 0.9 - Slope of counter-current flow rotary drier is in the range of ____________ meter/metre?
A. 0 to 0.08
B. 0 to 0.8
C. 0 to 1.5
D. 0 to 2.2
