The purpose of the schematic diagram is:
A) To show how the power and control wiring connect to the unit.
B) To show the location of all the electrical components.
C) To show how and where all the wires inside the unit are connected.
D) To show the scheme, or logic, of the electrical circuitry.
[Ques. 2] This type of diagram provides the technician with the unit's sequence of operations.
A) Ladder B) Point-to-point C) Pictorial D) Schematic
[Ques. 3] The RPM of a belt driven blower can be determined by:
A) Multiplying motor and fan sheave diameter and then divide by the motor RPM.
B) Multiplying motor RPM and motor sheave diameter and then divide by the fan sheave diameter.
C) Multiplying motor and fan sheave diameter and then dividing that total into the motor RPM.
D) Multiplying motor RPM and fan sheave diameter and then divide by the motor sheave diameter.
[Ques. 4] Examples of load devices include:
A) Motors, resistance heaters, and solenoid valves.
B) Motors, thermostats, overloads, heaters, and switches.
C) Overloads, door switches, and limit switches.
D) Thermostats, pressure switches, and overloads.
[Ques. 5] The most common types of single phase compressor motors are:
A) Split phase capacitor (SPC), capacitor start (CS), capacitor start/capacitor run (CSR), and semi-permanent split capacitor (SPSC)
B) Capacitor run (CR), permanent split capacitor (PSC), and capacitor start (CS), and shaded pole types
C) Split phase capacitor (SPC), semi-permanent split capacitor (SPSC), capacitor start (CS), and shaded pole types
D) Permanent split capacitor (PSC), capacitor start (CS), capacitor start/capacitor run (CSR), and split phase
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