Under normal operations, some outside air will always be included to:
A) Increase the speed of air circulation.
B) Prevent excessive levels of CO2 from building up.
C) Maintain the correct humidity levels.
D) Control the temperature more accurately.
B
You might also like to view...
Answer the following statement(s) true (T) or false (F)
1. Electric brakes have been in use since the early 1900s. 2. An electric brake consists of three friction surfaces, or shoes. 3. The coil leads of an AC magnetic brake are normally connected directly to the motor terminals. 4. For AC shoe brakes, the operating coils are shunt wound for across-the-line connections and series wound for connecting in series with DC motor armatures. 5. Series-wound brakes may be used for metal processing applications.
How is illuminance measured?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. A compound motor can be obtained by placing both a series field winding and a shunt field winding on the field poles of the motor. 2. Not all electric motors are suited to have their speed controlled with smooth acceleration or deceleration, but DC motors do have this ability. 3. The cadmium-controlled rectifier (CCR) is the most popular device among the thyristors, or electronic switches. 4. The direction of rotation of a DC motor can be reversed by changing the connections of either the armature or the field leads. 5. In the brush-type PM motor, the armature winding is no longer rotating, but is mounted within the outer frame structure, and is now called the stator.
Experts recommend that technicians attend how much refresher training each year?
A) 20 hours B) 8 hours C) 40 hours D) None of these