147) The water tube boilers produce steam at a __________ pressure than that of fire tube boilers.

Answer is:

higher

Answer is:

Answer is:

Answer is:

the steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft

the steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft

the steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft

the steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft.

Answer is: