Flat electrodes are sized by _____.

Flat electrodes are sized by _____.
 
  a. length
  b. the width of their widest side
  c. the area of their cross section
  d. voltage

 Q. 2

At its most basic a control requires
 
  A) a voltage source, a path, and a load B) a thermostat and a motor
  C) a sensor, an actuator, and a linkage D) a transformer, a relay, and a motor

 Q. 3

A modulating control
 
  A) Is mainly an off and on type of control
  B) Can be used with any voltage by adjusting the modulator setting
  C) Can modulate mechanical signals to wireless frequencies for remote control
  D) Can position a damper or valve to positions other than full open or closed