Shortest distance between two tubes is

If a projected roads from T to Y is built , then the shortest distance by road from W to X will be the same as the shortest distance by road from Z to __

A

T

B

U

C

V

D

Y

In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

A

Called tube pitch

B

Called tube clearance

C

Always less than the diameter of the tube

D

None of these

The diameters of fire tubes and superheater tubes in locomotive boiler are

A

47.5 mm, 130 mm

B

32.5 mm, 180 mm

C

65.5 mm, 210 mm

D

24.5 mm, 65 mm

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

A

Refrigerant cooling

B

Evaporator

C

Condenser

D

Throttling

Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its

A

High co-efficient of thermal expansion

B

Low thermal conductivity

C

High corrosion resistance

D

All of the above

In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

A

Are easier to clean

B

Are less prone to fouling

C

Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

D

None of these

Among P, Q, R, S and T, Q is the second tallest and S is immediate taller than the shortest . Who among them is in the middle when they stand in the order of their heights ? (1). T is not the shortest (2). R is taller than S but shorter than Q . (3). P ranks third in height above S when all are arranged in the order of height .

A

Only 1 and 2

B

Only 2 and 3

C

Either 2 only or 1 and 3 only

D

Only 2

In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

A

equal to sum of other two

B

greater than sum of other two

C

less than sum of other two

D

none of the mentioned

Which of the following is most useful for measuring the shortest distance between two places on the earth and path between them?

A

Atlas map

B

Thematic maps

C

Wall maps

D

Globe

Select the quotation word or phrases that needs correction. The "shortest" distance "between" "any" two points "are" a straight line.

A

shortest

B

between

C

any

D

are

Shortest distance between two tubes is

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