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What is true about ignition in turbine/Brayton cycle engines: a. igniters are on during start and are then off for normal operation. b. In normal

What is true about ignition in turbine/Brayton cycle engines:

a. igniters are on during start and are then off for normal operation.

b. In normal operation combustion is continuous.

c. Ignition takes place in the combustion chamber.

d. All of the above

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