Electrical circuits for domestic gas appliances, and gas controls

Question 1

All electrical circuits need these three components in order to work

Answer 1

Power source, a power switch, a a power consumer (load)

Question 2

These four main circuits are used in controlling gas fired appliances

Answer 2

Serious circuits, parallel, circuits, series/parallel circuits series and parallel circuits

Question 3

The circuit has more than one current pathway each separate pathway can be controlled individually

Answer 3

Parallel circuits

Question 4

These circuits, the series portion of the circuit controls the parallel circuit. The parallel portion of the circuit will have two or more power consumers being controlled by one or more switches wired in series to the load

Answer 4

Series/parallel circuits

Question 5

In this type of circuit, a series circuit is wired to another circuit in parallel with a common power source

Answer 5

Series and parallel circuits

Question 6

The resistance in this circuit is additive and will always be higher than the highest resistor in the circuit

Answer 6

Series circuits

Question 7

The resistance in this circuit is the sum of the reciprocal of all the resistance, and will always be lower than the lowest resistor in the circuit

Answer 7

Parallel circuits

Question 8

What four basic factors are gas control controls operated by

Answer 8

Heat (temperature), pressure, level or flow

Question 9

When this control switch causes its contacts on a rise and temperature, pressure, level or flow, it is said to make on rise that means the switch contacts clothes and make or complete the circuit when what is being sensed increases

Answer 9

Closed contacts switch

Question 10

This fan control switch in standard deficiency furnaces have adjustable on and offset points. The blower is off during standby and will not come on until the gas valve opens and allows. The furnace to heat up before activating the blower

Answer 10

Heat activated switch

Question 11

These diagrams are used to determine the sequence of operation for various components in order to see how the appliance

Answer 11

Ladder diagrams