What is the definition of a steam turbine?

What is the essential distinguishing feature between a steam turbine and the reciprocating steam engine?

What are six (6) advantages of steam turbines over reciprocating steam engines?

What is the operating principle of a reaction turbine?

What is the operating principle of an impulse turbine?

What are the differences between impulse and reaction turbines?

What is an extraction steam turbine?

What is a back-pressure steam turbine?

What is exhaust steam turbine?

What is the cause of turbine deposits?

What types of deposits are formed on steam turbine blades?

How can the deposits be removed?

How does deposit formation on turbine blades affect turbine efficiency and how to prevent turbine deposition?

What are the consequences of turbine depositions?

What could be possible problems encountered from starting up steam turbine from cold?

What is desuperheater and how does desuperheater protect steam turbines when starting from cold?

What does the term “ramp rate” mean?

Nozzles are fitted to some types of turbines.  What is the object of the nozzles? Name any turbines with nozzles.

What is meant by critical speed?

What are the main causes of turbine vibration?

List down all possible factors which may cause a turbine rotor to vibrate.

What are the factors that contribute to bearing failure in a steam turbine?

With reference to steam turbine, describe the operation of lifting the casing and rotor.  What attention does the rotor require before replacing? What precautions are taken to prevent injury to the blade? After replacing, what precautions are taken?

How many governors are needed for safe turbine operation? Why?

What is the safe maximum tripping speed of a turbine operating at 2500 rpm?

What are two types of clearance in a turbine?

What all the precautions and observations required to be taken for a steam turbine during bringing it on line?

What all the precautions and observations required to be taken for a steam turbine during in operation?

List the contents of a typical steam turbine logbook and indicate whether problems can be detected from the entries of the logbook.

What are the causes of erosion in turbine blades?  Suggest measures that can be taken to prevent this deterioration.

How is the rotor for a turbine balanced during construction? What is the object of balancing the rotor? What practical effect might occur due to an unbalanced rotor revolving at a high speed?

What metals are used for turbine blades?

In opening up a turbine, what inspection would you make and what defects would you expect to find?

What is the remedy of the damage to blade profiles?

What are two types of clearance in a turbine?

Why should a steam or moisture separator be installed in the steam line next to a steam turbine?

What are some conditions that may prevent a turbine from developing full power?

Why could a turbine wheel become unbalanced?

Why is it necessary to open casing drains and drains on the steam line going to the turbine when a turbine is to be started?

Besides lubrication, which are two functions of lubricating oil in some turbines?

What are the factors of blade failure?

How will you detect that misalignment is the probable cause of excessive vibration?

Back

The above questions are actual questions asked in the Engineering Knowledge and Oral Examination in Malaysia, and for further reading please click this link: http://www.massengineers.com/Documents/QASteamturbines.htm

However, the answers presented in this eBook for the above questions are somewhat different so that you could have alternative answers.