Gas turbine are hot-air engines that: a) use solely centrifugal air compressors b)use solely axial air compressors c)have a lover density working medium d) have compression pressure ratios of 20 to 1

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options