Changing the way you learn

Question 1

Question

A magneto ignition system: a. Does not require a coil b. Produces AC power c. Produces a hotter spark at high speeds d. Does not require points

Answer

a. Does not require a coil
b. Produces AC power
c. Produces a hotter spark at high speeds
d. Does not require points

Question 2

Question

The dual fuel engine: a. Does not require an injector b. May operate on a gas-air mixture only c. Do not have any valves d. None of the above

Answer

a. Does not require an injector
b. May operate on a gas-air mixture only
c. Do not have any valves
d. None of the above

Question 3

Question

Two types of steam nozzles used for steam turbines are convergent and; Divergent Stationary Convergent-Divergent Low Flow High Velocity

Answer

Divergent
Stationary
Convergent-Divergent
Low Flow
High Velocity

Question 4

Question

As the steam passes through the convergent nozzle there is a; Small pressure drop Large Pressure drop Small increase in pressure Large Increase in pressure Velocity decrease

Answer

Small pressure drop
Large Pressure drop
Small increase in pressure
Large Increase in pressure
Velocity decrease

Question 5

Question

A Reaction blade is characterized by a large entranced angle of almost (?) and a small discharge angle. 45 degrees 30 degrees 180 degrees 15 degrees 90 degrees

Answer

45 degrees
30 degrees
180 degrees
15 degrees
90 degrees

Question 6

Question

The distinguishing feature if the reaction turbine is the fact that the pressure does drop across the; Stationary blades Moving blades There is no pressure drop Stationary and moving blades None of the above

Answer

Stationary blades
Moving blades
There is no pressure drop
Stationary and moving blades
None of the above

Question 7

Question

In order to reduce the steam and blade velocity, the following methods may be used; Pressure compounding Velocity compounding Pressure-Velocity compounding Mass compounding Acceleration compounding

Answer

I, II
I, III, IV
I, II, III
III, V
IV, V

Question 8

Question

For large impulse turbines, it is very common to have a velocity compound first stage, followed by;

Answer

Several pressure compounded stages in the same casing
Several pressure-velocity compounded stages in the same casing
Several Acceleration compounded stages in a separate casing
Several Velocity compounded stages in a separate casing
None of the above

Question 9

Question

Turbines fall into two major categories, Condensing and;

Answer

Low pressure
High Pressure
Double Flow
Non-condensing
Single flow

Question 10

Question

A non-condensing turbine is also called a;

Answer

Low-pressure turbine
Backpressure turbine
Front Pressure turbine
Bleed turbine
None of the above

Question 11

Question

High pressure, high temperature casings used with temperatures above 550 degrees, are made of;

Answer

Cast iron
Carbon steel
Aluminum
Copper
Cast alloy steel with 3% chromium and 1% molybdenum

Question 12

Question

The term for a material at a given maximum temperature and under constant pressure that continues to deform with a very slow increasing strain on the material is called;

Answer

Creep
Slowness
Tension
Crawl
None of the above

Question 13

Question

What percentage of pressure drop is there in a impulse turbine across the moving blades

Answer

5%
10%
30%
60%
There is no pressure drop

Question 14

Question

Seal Strips, used to allow close running clearance with relatively large clearance between heavy parts are often made of;

Answer

Carbon steel
Aluminum
Chrome-iron alloy
Nickel
Copper

Question 15

Question

In an impulse turbine, turbine thrust must be counteracted since failure to do so would result in;

Answer

Less pressure
Greater pressure
Contact between the moving and stationary parts
Contact between the moving parts and casing
None of the above

Question 16

Question

From the thrust bearing the shaft must be free to expand in either direction, thus, the shaft can have only (?) thrust bearing(s)

Answer

Question 17

Question

Turbines can be used to drive;

Answer

Pumps
Compressors
Fans
Blowers
All of the above

Question 18

Question

What is the over speed trip for a turbine used for?

Answer

To shut down the turbine in case of low pressure
To shut down the turbine in case of high pressure
To shut down the turbine in case of high speed
Just another name for something that has no purpose
None of the above

Question 19

Question

Lubricating oil pressure on turbines is usually in the (?) Range?

Answer

15psi – 40psi
15KPa – 40KPa
69KPa – 138KPa
69psi – 138psi
None of the above

Question 20

Question

Before lubrication oil flows through the bearings of a turbine it needs to be cooled in the oil coolers. The typical outlet temperature, from the coolers, is in the (?) range.

Answer

43 degrees C – 49 degrees C
43 degrees F – 49 degrees F
23 degrees C – 42 degrees C
23 degrees F – 42 degrees F
None of the above

Question 21

Question

When left cold and at a standstill the weight of the rotor of a turbine will tend to cause the rotor to sag slightly. This is called;

Answer

Bending
Tapering
Sagging
Bowing
Hogging

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	Created by TRAVIS CANNING over 8 years ago