DC generator

Which is the device in DC Generators that converts AC current into DC current

• brushes
• commutator 
• stator
• armature

Which of these is NOT a part of a DC Generator.

• Slip rings
• commutator 
• brushes
• stator

DC Generators give 

• mechanical energy
• Electrical energy 
• DC Electrical energy 
• AC Electrical energy

The simple loop generator is different from DC Generators only in terms of

• brushes 
• stator
• armature
• commutator 

Figure shown is an Industrial DC Generator. What does the label ″W″ indicate.

• Armature 
• Field coil 
• brushes 
• commutator

Parts of a DC Generator are 

• Sliprings,stator,brushes,armature.
• Stator,armature,commutator,brushes.

Separately excited field generators has 

• Permanent magnet 
• Electromagnet 
• Residual magnetism 

In separately excited field generators, the stator produces its magnetic field 

• by external source of dc current 
• by current from armature 
• by permanent magnets 

In self excited field generators, the stator strengthens its magnetic field 

• by external source of dc current 
• By current from armature 
• By permanent magnet

Which of these pairs of devices operate in reverse of each other?

• generator and motor
• generator and electromagnet
• motor and electromagnet
• electromagnet and resistor