power prep quiz #8

A dual shaft gas turbine has the following advantages 1. flexability in system configuration 2. lower first cost 3. smaller starting motors 4. higher operating pressures

A gas turbine that uses an intercooler during compression

Intercoolers are used on a gas turbine compressors to:

A reheater in a gas turbine cycle will: 1. compress more air 2. allow for smaller turbine blades 3. allow for a smaller combustor 4. improve the cycle efficiency 5. will require less air for the same turbine output

A regenerator in a gas turbine cycle is also referred to as:

A gas turbine 1. is a hot air engine 2. has a pressure ratio of 30 - 1 3. always use axial air compressors 4. uses a lower density working medium

The flow of air and shaft speed of a gas turbine are fairly constant which results in _____________power outputs per unit weight.

A gas turbine is designed with the simplicity of a/an ________ and the advantages of a ______________.

In a gas turbine cycle the phrase Total energy Arrangement means:

A gas turbine arrangement employing the total energy arrangement may be used to provide 1. air conditioning 2. heating 3. electricity 4. cool drinking water

The disadvantage of a closed cycle gas turbine include: 1. higher initial cost 2. more space is required 3. more cooling water needed 4. more components needed

The regenerator in a gas turbine system gets its heat from:

Regenerator disadvantages include 1. pressure drop 2. temperature drop 3. fouling of heating surfaces 4. needs a large heating surface

using an intercooler in a gas turbine system will 1. create more power 2. lowers the airs specific volume 3. raise the 2nd stage air temp 4. drop some moisture from the air

initial ignition in a gas turbine combustor is accomplished using

The function of the combustor is to

The _________ on a gas turbine can be driven by the load turbine

A gas turbine compressor may be ________ by design

Axial air compressor blades are commonly made from 1. aluminum 2. brass 3. titanium 4. stainless steel

Gas turbine casings are usually made from:

The compressor in a gas turbine has to pressurize the air to supply:

The compressor in a gas turbine system uses up to _________ of the energy supplied by the fuel