The increase of cooling water temperature in petrol engine will _________ the knocking tendency. Decrease Increase None of these Not effect TRUE ANSWER : ? YOUR ANSWER : ?
A 75 cc engine has following parameter as 75 cc Fuel tank capacity Lube oil capacity Cylinder volume Swept volume TRUE ANSWER : ? YOUR ANSWER : ?
A spark plug gap is kept from 0.4 to 0.9 mm 0.6 to 1.0 mm 0.2 to 0.8 mm 0.3 to 0.7 mm TRUE ANSWER : ? YOUR ANSWER : ?
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere. Greater than Less than Equal to None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
A diesel engine has compression ratio from 25 to 40 10 to 15 15 to 25 6 to 10 TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called Overall efficiency Volumetric efficiency Mechanical efficiency Indicated thermal efficiency TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows Increasing the compression ratio Avoidance of overloading Adherence to proper fuel specification Using additives in the fuel TRUE ANSWER : ? YOUR ANSWER : ?
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of 1000°C 250°C 500°C 2000°C TRUE ANSWER : ? YOUR ANSWER : ?
In order to eliminate knocking in compression ignition engines, there should be High self ignition temperature of fuel Short delay period Low compression ratio Late auto-ignition TRUE ANSWER : ? YOUR ANSWER : ?
The ignition of the charge by some hot surface within the engine before the passage of spark is called Detonation Ignition delay Pre-ignition Auto-ignition TRUE ANSWER : ? YOUR ANSWER : ?