Fuel economy in an industrial furnace operation can not be achieved by the use of

Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by

A

Increasing the draft in the furnace

B

Preheating the fuel gas

C

Oxygen enrichment of combustion air

D

Preheating the combustion air

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

A

Walking beam

B

Shaft

C

Tunnel

D

Rotary hearth

Fuel economy in furnaces can be achieved by

A

Using oxygen enriched combustion air

B

Preheating the combustion air

C

Reducing the heat loss through furnace openings & doors

D

All of the above

Operation of blast furnace stove is based on the principles of a __________ furnace.

A

Regenerative

B

Recuperative

C

Both A and B

D

Neither A nor B

Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.

A

Low amount of excess combustion air

B

Large quantity of excess combustion air

C

Hydrocarbon fuel

D

Pulverised coal as fuel

Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?

A

Increase in calorific value of the fuel

B

Increase in flame temperature

C

Reduction in scale losses

D

Saving in fuel consumption

__________ furnace is not an electric furnace.

A

Arc

B

Induction

C

Pot

D

Resistance

Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?

A

2/3

B

3/4

C

4/5

D

4/3

A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.

A

12

B

15

C

27

D

9

Two tanks are filled to capacity with automobile fuel. The first tank holds 600 gallons more than the second tank. If 100 gallons were to be pumped from each tank, the first tank would then contain 3 times as much fuel as the second tank. What is the total number of gallons of fuel in the two full tanks?

A

1,400

B

1,200

C

1,000

D

900

Fuel economy in an industrial furnace operation can not be achieved by the use of

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