Most DC speed controllers use solid-state devices such as ____ to provide speed control for the motor.

a. diodes
b. GLOs
c. gates
d. SCRs


d. SCRs

Trades & Technology

You might also like to view...

The operating system's default runlevel is set by modifying the ____ file.

A. /etc/runlevel B. /etc/inittab C. /etc/startx D. /etc/default

Trades & Technology

Technician A says that drive-up ramps may shift and "kick out" allowing the vehicle to drop unexpectedly. Technician B says that the wheels should always be chocked when using ramps. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

Trades & Technology

A server that stores files on a LAN network is called a:

A) data server B) file server C) RAS server D) ration server E) proxy server

Trades & Technology

Shift work can require some employees to work when the majority of people are resting.