CAR Blueprint Reading & Interpretation 2

Question 1

On an appliance wiring diagram, a dashed line typically represents which type of connection?

Accepted Answer

A field-installed or optional wire

Answer

Dashed lines on wiring diagrams indicate field-installed or optional wiring that is not part of the factory assembly.

Question 2

What does the symbol 'M' inside a circle typically represent on an appliance schematic?

Accepted Answer

Motor

Answer

A circle containing the letter 'M' is the standard schematic symbol for an electric motor.

Question 3

When reading a refrigerator blueprint, the evaporator and condenser coils are distinguished primarily by their location relative to which component?

Accepted Answer

The compressor

Answer

The evaporator coil is located on the low-pressure side before the compressor, while the condenser coil is on the high-pressure side after it.

Question 4

A CAR technician sees '120V/60Hz' noted near a component on a blueprint. What does '60Hz' specify?

Accepted Answer

The AC frequency of the power supply

Answer

60Hz denotes the frequency of the alternating current supply, which is the US standard.

Question 5

On a parts breakdown diagram for a washing machine, exploded-view drawings are used primarily to:

Accepted Answer

Illustrate the assembly sequence and part relationships

Answer

Exploded-view drawings separate components spatially to clearly show how parts fit together and the order of assembly.

(CAR) Certified Appliance Recycler Practice Test