WAEC Physics 2023 Objective — Question 33
Question 33 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.
Advertisement
The purpose of commutators in a direct current motor is to
- A. increase the efficiency of the motor
- B. reverse the direction of the current after every half rotationCorrect
- C. enable a uniform couple to act on the coil
- D. increase the number of rotations per second
Explanation
The purpose of commutators in a DC motor is to reverse the direction of the current after every half rotation.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.