In liquid cooling, the cylinder walls and heads are provided with jackets through which the cooling liquid can circulate.

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: No umbrellas are raincoats Statement II: Some jackets are umbrellas Conclusion I: All raincoats are jackets Conclusion II: All jackets are raincoats

A

Only conclusion I follows

B

Only conclusion II follows

C

Both conclusions I and II follow

D

Neither conclusion I nor conclusion II follows

Load-bearing walls are defined as those walls which carry their own weight only whereas non-load bearing walls are defined as those walls which can carry superimposed loads in addition to their own weight.

A

True

B

False

In liquid cooling, the liquid becomes heated in its passage through the jackets and is itself cooled by means of an air-cooled radiator system.

A

True

B

False

If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Diameter of L.P. cylinder and D₂ = Diameter of H.P. cylinder)

A

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = {{\text{p}}_1}{{\text{p}}_2}$$

B

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = \frac{{{{\text{p}}_1}}}{{{{\text{p}}_2}}}$$

C

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = \frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}$$

D

None of these

The piston rod of a hydraulic cylinder exerts an operating force of 10kN. The allowable stress in the cylinder is 45N/mm². Calculate the thickness of the cylinder using Lame’s equation. Diameter of the cylinder is 40mm and pressure in cylinder is 10MPa.

A

2.05mm

B

4.2mm

C

5.07mm

D

None of the listed

The piston rod of a hydraulic cylinder exerts an operating force of 10kN. The allowable stress in the cylinder is 70N/mm². Calculate the thickness of the cylinder using Clavarinoe’s equation. Diameter of the cylinder is 240mm.μ=0.3 and pressure in cylinder is 15MPa.

A

35mm

B

30mm

C

27mm

D

None of the listed

A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are X_c and X_s respectively. Which of the following statement is correct?

A

X_c > X_s

B

X_c = X_s

C

X_c s

D

X_c greater/less than X_s depending on the length of the cylinder

___________ include privacy walls, boundary-marking walls on property, and town walls. These intergrade into fence.

A

Border wall

B

Shared wall

C

Boundary walls

D

Temporary wall

___________ categorises walls into calculated walls and non-calculated walls.

A

British Code CP. 11

B

British Code CP. 3

C

British Code CP. 16

D

British Code CP. 4

Construction of cavity walls as external walls to protect the building from the outside heat or cold as the hollow space between two walls act as an ________

A

Destructive material

B

Burning material

C

Building material

D

Insulating material

In liquid cooling, the cylinder walls and heads are provided with jackets through which the cooling liquid can circulate.

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