Titanic had steam made by 29 boilers in six boiler rooms, which contained 159 coal burning furnaces fueling the boilers.
The engines did not fail. Unfortunately they drove Titanic into the iceberg with resounding success.
Nobody reversed the engines anytime during the night Titanic was struck, but briefly, the engines were turned on.
The engines were powered by boilers
Engine, as in the steam engines that powered the Titanic.
Titanic was steered (unsuccessfully) to avoid the berg but the engines were not reversed.
Two triple expansion steam engines and an exhaust turbine
The RMS Titanic used 2 triple-expansion steam engines, each weighing 1,000 Tons (2 million pounds each). Source: Titanic-Titanic.com (see link below)
The three Olympic-Class vessels, including Titanic, were designed By Alexander Carlisle.
The Titanic had funnels to get rid of low pressure steam after it had been used to drive the engines.
No, it was a cruise liner, it had coal powered engines
Two triple expansion steam engines and a small turbine
I don't know what you mean. If you mean who could operate the engines then any senior officer while he was on watch. If you mean who was the officer who reversed the engines when Titanic hit the ice burg then it is 1st officer William Murdoch.