Deck 18: Turbines

Question 1

What improper operation can cause noise pollution?

A) Steam leaks
B) High discharge steam pressure
C) Loss of casing and/or line insulation
D) Allowing turbine to run at a critical speeds

Answer 1

B
Explanation: A) Incorrect. High discharge steam pressure can cause noise pollution.
B) Correct. High discharge steam pressure can cause noise pollution.
C) Incorrect. High discharge steam pressure can cause noise pollution.
D) Incorrect. High discharge steam pressure can cause noise pollution.

Question 2

What turbine design has a quicker capacity for speed changes?

A) Reaction design
B) Impulse design
C) Single-stage wind turbine design
D) Multi-stage centrifugal design

Answer 2

B
Explanation: A) Incorrect. Impulse turbines have a quicker capacity for speed than reaction turbines.
B) Correct. Impulse turbines have a quicker capacity for speed than reaction turbines.
C) Incorrect. Impulse turbines have a quicker capacity for speed than reaction turbines.
D) Incorrect. Impulse turbines have a quicker capacity for speed than reaction turbines.

Question 3

Where are gas turbines most commonly used in the process industries?

A) Generators in remote locations
B) Processing plants
C) Backup generators
D) Water pumps

Answer 3

A
Explanation: A) Correct. Gas turbines are most commonly used in the process industries to drive generators or compressors in remote locations.
B) Incorrect. Gas turbines are most commonly used in the process industries to drive generators or compressors in remote locations.
C) Incorrect. Gas turbines are most commonly used in the process industries to drive generators or compressors in remote locations.
D) Incorrect. Gas turbines are most commonly used in the process industries to drive generators or compressors in remote locations.

Question 4

What valve can be opened or closed slowly to control steam flow?

A) Trip valve
B) Steam valve
C) Throttle valve
D) Turbine valve

Question 5

What device is used to produce power and to rotate shaft-driven equipment such as pumps, compressors, and electrical generators?

A) Turbine
B) Trip valve
C) Throttle valve
D) Nozzle

Question 6

What type of turbine is moved, operated, or affected by water?

A) Gas turbine
B) Wind turbine
C) Steam turbine
D) Hydraulic turbine

Question 7

What is a device in the steam turbine entry piping that converts pressure to velocity and directs the flow of steam to the steam turbine blades?

A) Shaft
B) Casing
C) Nozzle
D) Governor

Question 8

What are rotor blades that move or rotate when steam is applied?

A) Governor
B) Fixed blades
C) Moving blades
D) Rotor assembly

Question 9

What involves motion used to perform work?

A) Kinetic energy
B) Potential energy
C) Mechanical energy
D) Actuate

Question 10

Which of the following is an advantage of steam turbines over electrical equipment?

A) They are free from spark hazard
B) They can be used during power outages
C) They are suitable for damp environments
D) All of the above

Question 11

What should process technicians check when monitoring and maintaining turbines?

A) Check oil levels to make sure they are satisfactory
B) Check bearing temperatures at gauges
C) Check for water in the reservoir
D) All of the above

Question 12

What type of turbine is driven by the pressure of steam discharged at high velocity against the blades of the rotor assembly?

A) Gas turbine
B) Wind turbine
C) Steam turbine
D) Hydraulic turbine

Question 13

What improper operation can cause hunting?

A) Loss of casing and/or line insulation
B) Allowing turbine to run at critical speeds
C) Allowing "wet steam" or condensate into the turbine
D) Having a turbine governor that is toggling the speed above and below normal operating set point

Question 14

What is a possible individual impact of touching the external housing of a steam turbine that is full of steam?

A) Burns caused by exposure to hot metal
B) Turbine could fly apart causing injury
C) Bodily injury from the turbine exploding
D) Retraining on turbine safety

Question 15

What type of turbine is frequently used instead of electric motors so that it will continue to run in the event of a power outage?

A) Wind turbine
B) Steam turbine
C) Hydraulic turbine
D) Diesel turbine

Question 16

What can be used to power turbines?

A) Air
B) Gas
C) Steam
D) All of the above

Question 17

What is the housing around the internal components of a steam turbine?

A) Shaft
B) Casing
C) Nozzle
D) Governor