Physics, 15.06.2021 22:10 derrickgatson48
Why do motors have gaps or breaks throughout the rotor and commutator?
a) It makes the motor cheaper since not as much material is needed.
b) Only some sections of the rotor will act as electromagnets, causing the rotor too always be pushed in the same direction.
c) It allows some of the magnetic field to escape so that rotor doesn't get too stressed.
d) It lets air into the motor to keep it cool since the electricity can make it hot.
e) It happens when rotors don't use enough oil, so they crack.
Answers: 1
Physics, 22.06.2019 01:30
Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w Š². 12 w Ń. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a Š². 2 Š° c. 3 a d. 4 a e. 6 a
Answers: 2
Physics, 22.06.2019 08:30
Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big
Answers: 1
Physics, 22.06.2019 14:00
Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same massāspring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same massāspring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s
Answers: 2
Why do motors have gaps or breaks throughout the rotor and commutator?
a) It makes the motor cheape...
English, 04.09.2019 10:10
Law, 04.09.2019 10:10
Biology, 04.09.2019 10:10
Chemistry, 04.09.2019 10:10
Mathematics, 04.09.2019 10:10
Mathematics, 04.09.2019 10:10
Mathematics, 04.09.2019 10:10
World Languages, 04.09.2019 10:10
Biology, 04.09.2019 10:10