Related Questions

The number of flights leaving a certain airport doubles during every one-hour period between its 9 am opening and noon; afternoon, the number of flights leaving from the airport doubles during every two-hour period. If 4 flights left from the airport between 9 am and 10 am, how many flights left the airport between 2 pm and 4 pm?
A 128
B 32
C 48
D 64
Slope of countercurrent 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
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
Cylinderical shell thickness of rotary drier is generally __________ mm.
A 2-3
B 18-22
C 6-8
D 12-15
Flights in a rotary dryer are provided to
A Lift and shower the solids thus exposing it thoroughly to the drying action of the gas
B Reduce the residence time of solid
C Increase the residence time of the solid
D None of these
Which is the controlling factor for a drum drier?
A Diffusion
B Heat transfer
C Both A & B
D Neither A nor B
Which of the following is not a continuous drier?
A Drum drier
B Spray drier
C Tunnel drier
D Tray drier
Which of the following is not a batch drier?
A Truck drier
B Agitated pan drier
C Fluidised bed drier
D Vacuum shelf drier
Free flowing granular materials can be best dried in a __________ drier.
A Rotary
B Cylinder
C Drun
D Freeze
We could barely get any information at the airport. _____ people seemed to have ____ idea about the flights.
A Many /any
B A lot of /any
C Only a few /some
D Few /on

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