power prep quiz 4

The low pressure end of a turbine may be protected from over pressure protection by an atmospheric relief valve and/or

condensers may be divided into two basic groups namely,

Jet condensers are in limited use today mainly due to:

Condenser waterboxes are typically made from:

condenser tube sheets are typically made from

A large heating surface is utilized in a surface condenser for maximum efficiency. This is largely done by:

To allow for differential expansion for the shell and tubes in a condesnser, which of the following methods may be used: 1. tube packing 2. expansion bends. 3. elastic materials 4. expansion joints to the shell 5. solid weld construction 6. slip expansion tubes

Safety fittings on a condenser may include 1. gage glass 2. relief valve 3. corrosion coupons 4. low water alarm 5. vacuum trip relay 6. leak detection devices

The main purpose of waterbox staybolts is to

non condensables in a condenser must be removed largely due to

An air ejector

The larges single heat loss in a steam power cycle is:

Air that enters a surface condenser:

the best test method to detect condenser cooling water leaks is

In a surface condenser: 1. packed tube ends allows the tube to move axially in the packing 2. deaeration is less efficient when the condensate is sub-cooled 3. there is no temperature differential expansion 4. when the inlet of the tube is exposed, it is also beaded over to prevent leakage

Prior to starting a large condensing turbine: