101 Basic Series - Module 18 - Post Assessment
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1
The body of a terminal block insulates the wire termination to maximize heat generated by current passing through the wire.
2
When a relay contact is Normally Open (NO), there is an open contact when the relay is energized.]
3
When a relay contact is Normally Closed (NC), there is a closed contact when the relay is energized.
4
The clamping device secures the wire and makes an electrical connection between the wire and the current bar.
5
A ____ contact can control one circuit.
6
The number of poles on a relay, depending on its design, can go to a maximum of 12 poles.
7
The most accurate, least expensive, and easiest to repair kind of timers are solid state.
8
Because the mounting rail dimensions differ on NEMA terminal blocks, they are not easily interchangeable between manufacturers.
9
Accessories, such as additional poles, transient suppressors, etc, can be added to general purpose relays.
10
With the ____ method of connection to a terminal block, the wire is held in place with a metallic plate when the screw is tightened.
11
The flexibility of terminal blocks allows wiring to be centralized, making it easier to maintain complex control circuits.
12
General-purpose relays operate with AC or DC current, at common voltages (12V to 230V), and at currents from 2A to ____.
13
Terminal blocks can be added or pulled off the rail but you have to move the other terminations.
14
Terminal blocks are classified as DIN (IEC) or NEMA.
15
____ is recommended for applications where the continuous operating temperature is between 110 and 140C.
16
____ is recommended for applications with very high temperatures, heavy dust deposits, or corrosive atmospheres.
17
Power is removed from the timer, and a preset period of time passes before the contacts return to their normal state when using a(n)____ timing function.
18
A____ solid state relay is used to control transformers and heavy inductive loads.
19
The____ is the portion of a solid state relay activated when a voltage higher than its pick-up voltage is applied.
20
A single-break contact breaks the circuit in one place, while a double-break contact does it in two.
 
   



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