Free cutting steels________?

Amorphous material is one________?

The number of drums in Benson steam generator is________?

The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is________?

The essential equipment for producing high vlotage for sparking in petrol engines with battery is________?

If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches ________?