The method of draining in the tunnels, is generally known as

Canals constructed for draining off water from water logged areas, are known

A

Drains

B

Inundation canals

C

Valley canals

D

Contour canals

The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as

A

Regenerative heating

B

Reheating of steam

C

Bleeding

D

None of these

Railway tunnels are generally

A

Polycentric

B

Rectangular

C

Parabolic

D

Circular

Be careful when draining ---- adverse weather condition. Fill in the blank with appropriate word.

A

to

B

under

C

along

D

during

Veins draining into the left brachiocephalic vein include

A

Inferior thyroid

B

Left internal thoracic

C

Thymic

D

Azygos

E

Both vertebral

Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.

A

Single stage vertical

B

Centrifugal

C

Plunger

D

Diffuser

Pick up the mechanical ventilation method used for tunnels from the following:

A

Blowing fresh air by ducts to the face of tunnel

B

Exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel

C

Blowing fresh air and exhausting foul air by ducts

D

All the above

In “full face” method of constructing tunnels, the first operation relates to

A

Removal of bottom portion

B

Excavation of one drift in the centre

C

Removal of top portion

D

Excavation being done along the periphery

Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?

A

Stone masonry

B

Timber

C

Cast iron

D

Cement concrete

Which of the following methods of tunneling is used for long tunnels at great depths?

A

Army method

B

Needle beam method

C

Austrian method

D

English method

The method of draining in the tunnels, is generally known as

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