Questions and Answers.
Which of the following overload devices is NOT affected by ambient Temperature? - Answer
Magnetic
Schematic diagrams resemble a ladder because two vertical lines. - Answer True
The allowable voltage drop most manufacturers allow is 15%. - Answer False
The voltage in a series circuit is the same in each device. - Answer False
The total current draw of the entire parallel circuit can not be determined. - Answer False.
When a control is required to control space or product temperature, it's called a ....? - Answer
Thermostat
Schematic diagrams use symbols to represent components in a system. - Answer True
When contactor coil is energized, how much resistance should be measured between L1 and
T1? - Answer Zero ohms
An open winding in an electric motor means that....? - Answer A wire in a winding is broken
All heating/cooling equipment should have means of disconnecting power at unit. - Answer
True
Coil characteristics depends on the type of wire but not the manner in which it is wound. -
Answer False
The metals most commonly used in bimetal temp controls are ....? - Answer Brass and steel
The electrical source is electrical energy being supplied to the equipment. - Answer True
Magnetic overload devices are the most accurate type of device for electrical protection. -
Answer True