Question: How does using a split ring commutator with several splits improve the DC motor? a. It ensures that the commutator is always in contact with

How does using a split ring commutator with several splits improve the DC motor? a. It ensures that the commutator is always in contact with the circuit. b. It improves the efficiency of the magnetic force on the loop c. It enables the motor to spin faster. d. It increases the amount of power

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=+ c. Better birth-control methods reduce the rate of population growth.

=+ d. A one-time, permanent improvement in technology increases the amount of output that can be produced from any given amount of capital and labor.

=+ b. A change in weather patterns increases the depreciation rate.