In diesel engine, gas engine type of machine contains ___

In diesel engine, gas engine type of machine contains ___________________ pole type of alternator.

A. cylindrical.
B. salient.
C. non uniform cylindrical.
D. none of these.

Show Answer

Answer: B

Share your understanding of this question with the correct explanation.

The answer is B. salient.

Diesel engines and gas engines use salient pole alternators. Salient pole alternators have poles that project outward from the rotor, which makes them less efficient than cylindrical pole alternators. However, salient pole alternators are less expensive to manufacture and are easier to maintain.

Here are some of the advantages and disadvantages of salient pole alternators:


  • Less expensive to manufacture
  • Easier to maintain
  • Can be used at lower speeds


  • Less efficient than cylindrical pole alternators
  • Can produce more noise
  • Can be more difficult to balance

Cylindrical pole alternators have smooth, cylindrical rotors. They are more efficient than salient pole alternators, but they are also more expensive to manufacture and maintain. Cylindrical pole alternators are typically used in high-speed applications, such as power generation.