Which of the following conveyors cannot be recommended for transportation of abrasive materials?

__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials.

A

Bucket

B

Belt

C

Screw

D

Apron

For material transportation, conveyors are used when the prevailing conditions include

A

Loads are uniform

B

Routes do not vary

C

Materials move relatively continuously

D

All of these

The abrasive recommended for grinding materials of high tensile strength is

A

Silicon carbide

B

Aluminium oxide

C

Sand stone

D

Diamond

The abrasive recommended for grinding materials of low tensile strength is

A

Silicon carbide

B

Aluminium oxide

C

Sand stone

D

Diamond

An alternative optimal solution to a minimization transportation problem exists whenever opportunity cost corresponding to unused route of transportation is:

A

Positive & greater than zero

B

Positive with at least one equal to zero

C

Negative with at least one equal to zero

D

None of the above

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

A

Silicon carbide

B

Corundum

C

Aluminium oxide

D

Boron carbide

The maximum recommended pulse rate R, when exercising , for a person who is x years of age is given by the equation R = 176- 0.8 x. what is the age , in years , of a person whose maximum recommended pulse rate when exercising is 140?

A

40

B

45

C

50

D

55

The maximum recommended pulse rate R, when exercising .for a person who is x years of age is given by the equation R = 176 - 0.8 x . what is the age, in years , of a person whose maximum recommended pulse rate when exercising is 140?

A

40

B

45

C

50

D

55

Vertical transportation of materials can be done by a/an

A

Apron conveyor

B

Pneumatic conveyor

C

Bucket elevator

D

Both B & C

A belt conveyor used for the transportation of materials can

A

Run upto 1 km

B

Travel at a speed upto 300 metres/minute

C

Handle materials upto 5000 tons/hr

D

All of the above

Which of the following conveyors cannot be recommended for transportation of abrasive materials?

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