Answer
Correct Answer is B(to change direct current into alternating current)
Explanation
commutation
The main aim of commutation is to maintain the torque acting on armature of DC motros in the same direction.
commutator a switch which is used to convert the direction of flow of electric current it is connected to the armature of DC motor.
In DC motors, voltage across the armature is alternating in nature. The direction of this current is reverses by Commutator when armature of DC motors passes through magnetic neutral axis to maintain the unidirectional. Hence, commutator is used to change direct current into alternating current.
The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. the <span>comparison is best supported by this information is that beryllium has a lower atomic radius than Barium</span>
f=MG
100kg*10=1000
work done =force *distance
1000*3
3000N
Answer:
Glucose - from the food we eat, then the food is broken down into another type of sugar called glucose.
Amino Acid - animal proteins such as meat, eggs and poultry. When you eat protein, it is broken down into amino acids.
Oxygen - we get oxygen by breathing in fresh air.