A DC motor of internal resistance 6.0 ? is connected to a 24-V power supply. The operating current is 1.0 A
(a) What is the start-up current? (b) What is the back emf when the motor is running at full speed? (c) What is the back emf when the motor is running at half speed?
(a) 4.0 A
(b) 18 V
(c) 9.0 V
Physics & Space Science
You might also like to view...
The unit F, the farad, is equal to which of the following?
A. V/m
B. V/C
C.
D. C/V
E.
Physics & Space Science
Streaks of light made when small debris hits our atmosphere are called
A) meteorites. B) meteors. C) asteroids. D) meteoroids. E) comets.
Physics & Space Science
Light is totally absorbed when sent through two Polaroid filters if their transmission axes are __________
Fill in the blank(s) with correct word
Physics & Space Science
If three vectors add to zero, they must all have equal magnitudes
A) True B) False
Physics & Space Science