Chapter 69

Question 0

A steam turbine’s exhaust can often supply a process with steam because:
A) processes always require a lower steam pressure
B) processes never require the high steam temperatures turbines do
C) turbine exhaust steam is always dry and saturated
D) it is free of oil
E) the steam will be at a temperature above the initial temperature

Answer 0

D) it is free of oil

Question 1

The stationary passage of reaction turbines is the:
A) shaft
B) rotor
C) shroud ring
D) fixed blade
E) dummy piston

Answer 1

D) fixed blade

Question 2

The great majority of steam turbine governors utilizes the:
A) hydraulic system principle
B) pneumatic system principle
C) mechanical centrifuge principle
D) lever principle
E) bimetal expansion principle

Answer 2

C) mechanical centrifuge principle

Question 3

There are two types of steam turbine categorized by the type of bladin used. These are _____ turbines and _____ turbines.

Answer 3

Reaction, impulse

Question 4

Larger, high output machines use a shaft with many complex winding restrictions to the steam flow by fitting rings into the casing and shaft that form narrow passages for the steam to pass through. These are called _____ glands.

Answer 4

Labyrinth

Question 5

Since a steam turbine requires no _____ _____, the exhaust steam contains no oil and can be used as a steam supply to low pressure systems or condensed for reuse as boiler feedwater.

Answer 5

Cylinder lubrication