Deck 8: Component Alignment

Question 1

Gearbox ratio is the input speed divided by the output speed.

Answer 1

True

Question 2

Wind is considered the prime mover for a wind turbine generator.

Answer 2

False

Question 3

Shaft misalignment conditions include: axial, parallel, and angular.

Answer 3

True

Question 4

The amount of allowable shaft misalignment is a function of the shaft operating speed.

Question 5

The shaft alignment process with a LASER set requires positioning the measuring heads at three reference positions that include: 12 O'clock, 3 O'clock, and ________.

A) 6 O'clock
B) 9 O'clock
C) 2 O'clock
D) 11 O'clock

Question 6

Soft Foot correction methods may use a variety of measurement tools including: LASER, feeler gage set, and _________.

A) dial indicator
B) plumb bob
C) sextant
D) tachometer

Question 7

Component misalignment issues may create excessive vibration and premature bearing failure.

Question 8

The three things required to produce an electrical output from a generator are: coil of wire connected to a load, magnetic field, and __________ between them.

A) solar energy
B) nuclear radiation
C) relative motion
D) good paint job

Question 9

Flexible couplings used between the gearbox and generator for wind turbines include an ________ to prevent bearing and gear damage.

A) shaft seal
B) spider
C) electrical isolation component
D) accumulator

Question 10

A large compression coupling may be used to mount the wind turbine main shaft to the gearbox input shaft.

Question 11

Typical equipment that may be used for shaft alignment practices include: dial indicators, dial calipers, measuring tapes, and LASER units.

Question 12

The synchronous speed would be the same for a four-pole generator no matter if it operates at 50 or 60 Hz.

Question 13

A flexible coupling should never be used in an application that may have minor shaft misalignment.

Question 14

Prime movers in the electrical generation industry include gas, steam, and ______ turbine assemblies.

A) solar PV
B) water
C) locomotive
D) Soyuz

Question 15

Typical flexible coupling assemblies include: two shaft hubs and a rigid connecting component.