86.

87.

88,

89.

90,

91.

92.

98,

1f the air fuel mixture ignites before the spark takes place the condition known as :

(ക) Detonation (B) Ignition
(C) Pre ignition (D) Knocking
The octane rating of commercially available petrol is :
(^) 88-95 18) 95-100
(0). 100-110 യ 110-125
The power actually developed by the engine cylinder of an IC engine known as :
(5) Theoretical power (B) Actual power
(0 Indicated power . (D) None of the above

The ratio of the work obtained by the crankshaft in a given time to the energy supplied
during the same time is known as :

(ಗಿ) Mechanical efficiency (B) Indicated thermal efficiency
(C) Overall efficiency (D) Volumetric efficiency

In order to eliminate knocking in compression ignition engines, there should be :
(ಗ) Short delay period
, 0) Late auto ignition
(09 பன compression ratio
(D) High self ignition temperature for fuel

The ratio of the brake power to the indicated power is called :
(മ) Indicated thermal efficiency (B) Overall efficiency
(C) Mechanical efficiency യ) Volumetric efficiency

During the charging the specific gravity of the electrolyte of lead acid battery :
(ಯ) Increases (8) Becomes zero
(C) Decreases (D) Remains same

The capacity of battery is expressed in terms of :

(A) Current rating (B) Voltage rating
)© Ampere-hour-rating (D) None of the above
When the lead acid battery fully charged electrolyte color will be?
(80 एणा (8) Reddish
(C) Bright (0) Milky
13 061/2016

01م