6 to 10

2 to 4

> 10

None of the above

4 to 6

6 to 8

15 to 20

> 25

${\eta }_{otto}$ > ${\eta }_{diesel}$ > ${\eta }_{dual}$

${\eta }_{diesel}$ > ${\eta }_{otto}$ > ${\eta }_{dual}$

${\eta }_{otto}\succ {\eta }_{dual}\succ {\eta }_{diesel}$

${\eta }_{dual}$ > ${\eta }_{otto}$ > ${\eta }_{diesel}$

${\eta }_{dual}$ > ${\eta }_{dual}$ > ${\eta }_{otto}$

${\eta }_{Diesel}$ > ${\eta }_{Dual}$> ${\eta }_{Otto}$

${\eta }_{Dual}$ > ${\eta }_{Otto}$ > ${\eta }_{Diesel}$

${\eta }_{Otto}$ > ${\eta }_{Dual}$> ${\eta }_{Diesel}$

${\eta }_{Otto}$ > ${\eta }_{Dual}$ > ${\eta }_{Diesel}$

${\eta }_{Otto}$ > ${\eta }_{Diesel}$ > ${\eta }_{Dual}$

${\eta }_{Diesel}$ > ${\eta }_{Dual}$ > ${\eta }_{Otto}$

${\eta }_{Diesel}$ > ${\eta }_{Otto}$ > ${\eta }_{Dual}$

SI engines

CI engines

Pulse jet engines

Gas turbines

2 constant Volume & 2 constant  pressure processes

2 constant volume & 2 constant isentropic processes

One constant pressure one constant volume & 2 isentropic processes

None of the above

Ramjet engines

Gas turbines

Pulse jet engine

CI engine

Brayton cycle

Otto Cycle

Diesel cycle

Stirling Cycle

20%

33.3%

40%

50%

11 KJ

13 KJ

26 KJ

28 KJ

Carnot cycle

Sterling cycle

Ericsson cycle

Brayton cycle

1.1 & 1.2

1.0 & 1.1

1.2 & 1.3

Less than 1

Increases

decreases

Remains the same

None of the above

Small bore

Short ratio  of flame path to bore

Absence of hot surface in the last region of charge

All of the above.

At the start of combustion

At the end of combustion

During combustion

None of the above.

The working fluid should be air

The speed should be air

Suction temperature should be high

Temperature of the working fluid at the end of compression and expansion should be equal

Be twice that of the four stroke engine

Be half that of the four stroke engine

Be the same as that of the four stroke engine

Depend upon whether it is a Cl or Sl engine

248 cc

252 cc

264 cc

286 cc

10% richer than stoichiometric

Equal to stoichiometric

More than 10% richer than stoichiometric

10% leaner that stoichiometric

1 and 2

2 and 3

3 and 4

4 and 1

Shall increases with increases in r_p (pressure ratio for constant volume heating) and decreases in r_c (constant pressure cut off ratio)

Shall increases with decreases in r_p and increases in r_c.

Shall remain independent of r_p

Shall remain independent of r_c.

Spark plug located away from exhaust value, wedge shaped combustion chamber and short flame travel distance

Wedge shaped combustion chamber.

Wedge shaped combustion chamber and short flame travel distance

Spark plug located away from exhaust valve, short flame travel distance and side valve design.

Only 1

1 and 2

2 and 3

1, 2 and 3

Only 1

Only 2

Only 3

1, 2 and 3