ALTERNATOR 1
Test Your Knowledge on Alternators
Welcome to the Alternator Quiz! This quiz is designed to assess your understanding of alternators, their types, fun
Challenge yourself with questions covering:
- Synchronous machine speeds
- Types of exciters
- Fundamental principles of alternator operation
- Rotors for different applications
1.The speed of a 4 pole 60Hz synchronous machine will be _____________.
1800 rpm
2400 rpm
3000 rpm
3600 rpm
2. An exciter is a ________________
DC series motor
DC shunt motor
DC shunt generator
DC series generator
3. In an alternator the voltage generated per phase is proportional to ______
Number of turns in coil
Flux per pole
Frequency of waveform
All of the above
4. Salient pole type alternators are generally used on ____________
Low voltage altesrnator
Hydrogen cooled primemovers
High speed primemovers
Low and medium speed primemovers
5. The frequency of voltage generated in large alternators is __________
50 HZ
60HZ
In kilo cycles
In mega cycles
6. Turbo alternators are generally used to run at ____________
750 rpm
1500rpm or 3000 rpm
5000 rpm
15000 rpm
7. The number of poles in turbo alternators are usually ___________
2 or 4
24
12
50
8. In huge alternators, the moving part is _____________
Brushes
Poles
Armature
None of the above
9. The rotor preferred for alternators applied to hydraulic turbines are ___
Salient pole type
Cylindrical rotor type
Solid rotor type
Any of the above
10. What kind of rotor is most suitable for turbo-alternators which are designed to run at high speed?
Salient pole type
Non-salient pole type
Either a or b
None of the above
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