Gas Turbines - Ignition Systems: DGCA Technical General questions

Question 1

Precautionary use of igniters may be necessary during:

Accepted Answer

flight through heavy tropical rainstorm.

Answer

ground running.

Answer

flight through sandy conditions.

Answer

flight through very dry air.

Question 2

A gas turbine engine which has both high and low energy ignition systems uses the high energy system for i, and the low energy system for ii: i / ii

Accepted Answer

high altitude relighting / take-off from contaminated runways

Answer

engine starting / high altitude relighting

Answer

take-off from snowy runways / engine start

Answer

take-off from flooded runways / take-off from snowy runways

Question 3

A high energy ignition system works on the principle of:

Accepted Answer

obtaining energy from the discharge of a capacitor.

Answer

obtaining power from a step up transformer from the aircraft's AC power system.

Answer

magneto static induction.

Answer

Fleming's Right Hand Rule.

Question 4

The low energy ignition system would be used:

Accepted Answer

during take-off from wet runways.

Answer

only for starting the engine on the ground.

Answer

for relight at high altitude.

Answer

during a blow out motoring over cycle.

Question 5

The rate of discharge of a High Energy Ignition Unit is:

Accepted Answer

60 - 100 times per minute.

Answer

4 discharges per revolution.

Answer

60 - 100 per second.

Answer

governed by the resistance of the igniter plug.

3 more questions in this chapter