Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

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

Height of the flights in the rotary drier is in the range of

A

0.08 to 0.12 d

B

0.02 to 0.05 d

C

0.2 to 0.5 d

D

0.5 to 0.6 d

Cylinderical shell thickness of rotary drier is generally __________ mm.

A

2-3

B

18-22

C

6-8

D

12-15

Free flowing granular materials can be best dried in a __________ drier.

A

Rotary

B

Cylinder

C

Drun

D

Freeze

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

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

Length to diameter ratio of most rotary driers is in the range of

A

1 to 2

B

4 to 10

C

10 to 20

D

20 to 30

A = (-3,5) and B =(3,-4) .The absolute value of the slope of AB is equal to the slope of AC What are the coordinates of point C?

A

(8,-1)

B

(-1,8)

C

(-3,2)

D

(2,-3)

Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

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