Question 1

Schematics show components in their electrical sequence without regard for .&#10;A)composition&#10;B)on-off state&#10;C)in-out flux&#10;D)physical location

Accepted Answer

Schematics only show the electrical connections between components and do not consider their physical locations. Schematics only focus on the electrical sequence and do not take physical location into consideration.

Question 2

The movable contact for a normally closed switch is drawn .&#10;A)below but not touching the stationary contact&#10;B)below and touching the stationary contact&#10;C)above and touching the stationary contact&#10;D)above but not touching the stationary contact

Accepted Answer

C

Question 3

Normally open switches are drawn with the movable contact above and touching the stationary contact.

Accepted Answer

Normally open switches are drawn with the movable contact separated from the stationary contact. When the switch is closed, the movable contact comes into contact with the stationary contact. Normally open switches are drawn with the movable contact below and disconnected from the stationary contact.

Question 4

The most standardized set of symbols in the United States is provided by the NEMA.

Accepted Answer

The National Electrical Manufacturers Association (NEMA) provides the most standardized set of symbols for electrical devices in the United States. The National Electrical Manufacturers Association (NEMA) provides the most standardized set of symbols for electrical and electronic equipment in the United States.

Question 5

One of the most used symbols in control schematics is the .&#10;A)switch&#10;B)transformer&#10;C)push button&#10;D)capacitor

Accepted Answer

The answer of One of the most used symbols in...

Question 6

The symbol for a switch represents a bimetal helix.&#10;A)pressure&#10;B)temperature&#10;C)flow&#10;D)liquid level

Accepted Answer

A bimetal helix is used to sense temperature changes and is commonly used in temperature switches. A bimetal helix is a type of temperature sensor, so the symbol would represent a temperature switch.

Question 7

The most common coil symbol used in schematic diagrams is the rectangle.

Accepted Answer

The most common coil symbol used in schematic diagrams is actually a circle with a single wire coming out of it, indicating a single winding coil. However, there are variations of the coil symbol depending on the type of coil being represented, such as a double-winding coil, a variable coil, or a multi-layer coil. The most common coil symbol used in schematic diagrams is the circle with two protruding lines representing the terminals.

Question 8

Schematics are always drawn to show components in their de-energized or off state.

Accepted Answer

Schematics are drawn to depict the components in their de-energized state, as energized or on state may lead to confusion, errors, or safety hazards. Schematics are drawn to show components in their de-energized state to avoid confusion and potential safety hazards. It helps to visualize the wiring and connections without the risk of electric shock or damage to the equipment.

Question 9

Timed contacts are either normally open or normally closed.

Accepted Answer

Timed contacts can be either normally open (NO) or normally closed (NC), depending on the design and intended function. Timed contacts are indeed either normally open or normally closed, meaning they are either in an open state (no connection) until a signal is sent to close them, or they are in a closed state (connected) until a signal is sent to open them.

Question 10

Mechanical connections are shown with .&#10;A)straight broken lines&#10;B)a connection dot&#10;C)a connection node&#10;D)lines crossing each other

Accepted Answer

Mechanical connections are shown with straight broken lines.

Deck 4: Symbols