Air-petrol ratio for maximum power generation in spark ignition engine is about

The most accurate ignition system of a spark ignition engine is

A

Magneto system

B

Battery system

C

Electronic control unit system

D

Magneto and electronic system

The ignition in a spark ignition engine takes place when the piston is

A

Exactly at the T.D.C. position on its compression stroke

B

Approaching the T.D.C. position on its compression stroke

C

Leaving the T.D.position on its compression stroke

D

Approaching the T.D.C. position on its exhaust stroke

The auto ignition in a spark ignition engine means

A

Automatic ignition of the charge at the end of compression

B

Ignition induced by the passage of a spark

C

Ignition of the charge before the passage of flame front

D

Ignition induced to supplement the process of normal combustion

In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have

A

Low density

B

Low temperature

C

Long ignition delay

D

All of these

The advancing of spark timing in spark ignition engines will _________ knocking tendency.

A

Increase

B

Reduce

C

Not effect

D

None of these

A basic difference between the spark ignition engine and the Diesel engine is that the

A

Diesel engine compresses air alone instead of an air-fuel mixture

B

Air temperature ignites the fuel in the Diesel engine

C

Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.on the compression stroke

D

All of the above

Generation X refers to people born roughly between 1965 and 1981 Employees of Generation X tend to be successful when they can carry out task independndy. This makes Generation X the most entrepreneurial generation in history. Which of the following statements is best supported by the paragraph?

A

Employees of Generation X like to challenge the work attitudes of their bosses.

B

Employees of Generation X tend to work in jobs that require risk-taking behavior.

C

Employees of Generation X have a tendency to be self directed workers

D

Employees of Generation X work harder than people form other generations

The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of

A

Morse test

B

Prony brake test

C

Motoring test

D

Heat balance test

If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

A

17 : 1

B

15 : 1

C

13 : 1

D

10 : 1

In spark ignition petrol engines maximum emission of Nox takes place when the air fuel ratio (A/F) is

A

Very weak mixture and A/F ratio about 19

B

Weak mixture and A/F ratio about 17

C

Chemically correct mixture and A/F ratio about 15

D

Rich mixture and A/F ratio about 13.

Air-petrol ratio for maximum power generation in spark ignition engine is about

Related Questions