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291.

Radiator is generally fabricated as:

A.	Tabular type	B.	Cellular type
C.	Both (a) & (b)	D.	None of these

292.

Honeycomb type radiator is also known as:

A.	Cellular type	B.	Tabular type
C.	Both (a) & (b)	D.	None of these

293.

Thermostat valve is used in:

A.	Air-cooled engines	B.	Water-cooled engines
C.	Steam engines	D.	All are correct

294.

Thermostat valve begins open at:

A.	70-75?C	B.	70-81?C
C.	65-75?C	D.	75-81?C

295.

In petrol engines thermostat valve fully opens at:

A.	72?C	B.	78?C
C.	82?C	D.	85?C

296.

In diesel engines, thermostat valve fully opens at:

A.	88-90?C	B.	90-95?C
C.	90-100?C	D.	75-110?C

297.

The liuid used in bellows types thermostat is known as:

A.	Alcohol	B.	Ether
C.	Mercury	D.	Both (b) & (c)

298.

In force-feed cooling system thermostat valve begins to open at:

A.	70?C	B.	74?C
C.	78?C	D.	80?C

299.

Thermostat valve widely opens at about:

A.	78?C	B.	80?C
C.	85?C	D.	90?C

300.

In most tractor engines, a cooling systems used is:

A.	Splash cooling	B.	Pressure cooling
C.	Gravity feed type cooling	D.	All are correct