14.

18.

16,

17:

18.

19.

20.

21.

In large high power marine engines a cross head is used to connect :
(வி Piston to piston rod (B) Piston rod to connecting rod
(0 Cylinder head to engine frame (D) Connecting rod to crank shaft

The ratio of brake horse power to indicated horse power is called :
(ಗಿ) Volumetric efficiency (B) Thermal efficiency
(C) Power efficiency (D) Mechanical efficiency

The tendency of a force to rotate an object about an axis is called :

८) r.p.m. (18) Centrifugal force

(0) Torque (D) Horse power
The actual power developed inside the cylinder is called :

(A) brake power (B) indicated power

(C) shaft power (D) rated power

Reversible engines are commonly used in :
(ಯ) large marine vessels (B) air plane propulsion systems
(C) automobiles (1)) none of the above

In a transmission gear box, the number of tecth in the driving gear is 38. To rotate the
output shaft at half of the rpm of driving shaft, the number of teeth required in the driven

gearis:

(५) 19 08) 38

(0) 78 (D) 152
The bearing to support the propeller shaft is :

(ക) Plummer block (B) Main bearing

)0 Bigend bearing (10) Thrust bearing
Select the fuel with highest L.C.V. (lower calorifie value) from the options :

(ക ஸல (18) Diesel

(0 LN.G. 8 (D) Kerosene

Autoignition temperature of a substance ‏قط قا‎ lowest temperature at which it will
spontaneously ignite in normal atmosphere without an external source of ignition. Among

the commonly used fuels,———— has the lowest autoignition temperature.
(A) Kerosene (B) ரஸல்‌
)© ലാല്‍ ) oil
5 16/2015

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