MCQs of Jet Propulsion (Power Plant Engineering - 2171910)

Showing 11 to 20 out of 30 Questions

11.

Ramjet engine

(a)	is self-operating at zero flight speed
(b)	is not self-operating at zero flight speed
(c)	requires no air for its operation
(d)	produces a jet consisting of plasma

12.

Which of the following is not the component of Ramjet engine?

13.

Pick up the wrong statement.

(a)	Pulse-jet requires no ambient air for propulsion
(b)	Ramjet engine has no turbine
(c)	Turbine drives compressor in a Turbojet
(d)	Bypass turbojet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy

14.

In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in

(a)	exit nozzle, which is a constant volume process
(b)	exit nozzle, which is essentially an isentropic process
(c)	turbine blades, which is a constant volume process
(d)	turbine blades, which is essentially an isentropic process

15.

Ram compression in turbojet involves

(a)	reduction of speed of incoming air and conversion of part of it into pressure energy
(b)	compression of inlet air
(c)	increasing speed of incoming air
(d)	lost work

16.

Which of the following fuels can be used in turbojet engines?

17.

A simple turbojet engine is basically

(a)	a propeller system
(b)	gas turbine engine equipped with a propulsive nozzle and diffuse
(c)	chemical rocket engine
(d)	ramjet engine

18.

Fighter bombers use the following type of engine

19.

Propulsion efficiency of the following order is obtained in practice

20.

The thrust of a jet propulsion power unit can be increased by

(a)	injecting water into the compressor
(b)	burning fuel after the gas turbine
(c)	injecting ammonia into the combustion chamber
(d)	all of these

Showing 11 to 20 out of 30 Questions