CHAPTER FIVE AND REVIEW

THE SERIES CIRCUIT IS THE MOST COMMONLY USED CIRCUIT IN HVACR.

• TRUE

• FALSE

HOW DOES VOLTAGE BEHAVE IN A SERIES CIRCUIT?

• IT HAS THE SAME VALUE ACROSS EACH LOAD

• IT DROPS ACROSS EACH LOAD

• IT IS THE SAME THROUGHOUT THE CIRCUIT

• IT IS NOT A FACTOR IN SERIES CIRCUITS

WHEN MORE RESISTANCES ARE ADDED IN A SERIES CIRCUIT, THE CURRENT WILL___________________

• INCREASE

• NOT BE AFFECTED

• BE CALCULATED BY FINDING THE AVERAGE VALUE OF THE RESISTANCES

• DECREASES

AN INTERRUPTION OF CURRENT ANYWHERE IN A SERIES CIRCUIT WILL DISRUPT CURRENT FLOW THROUGHOUT THE ENTIRE CIRCUIT

• TRUE

• FALSE

SWITCH CONTACTS ARE IN SERIES WITH A LOAD TO CONTROL ITS OPERATION

• TRUE

• FALSE

IF THREE LOADS ARE WIRED IN SERIES AND ONE LOAD FAILS TO CONDUCT CURRENT, WHAT WILL HAPPEN?

• THE OTHER TWO LOADS WILL OPERATE NORMALLY

• NONE OF THE LOADS WILL OPERATE

• THE LOAD NEXT TO THE FAILED ONE WILL NOT WORK BUT OTHER ONE WILL OPERATE

• ONLY THE LOAD CLOSEST TOT HE SOURCE WILL OPERATE

WHICH STATEMENT IS NOT TRUE ABOUT VOLTAGE IN A PARALLEL CIRCUIT?

• VOLTAGE DROPS ACROSS EACH BRANCH

• VOLTAGE IS THE SAME ACROSS ALL BRANCHES

• SOURCE AND BRANCH VOLTAGES ARE THE SAME

• THE SUM OF THE BRANCH CURRENT EQUALS THE TOTAL CIRCUIT CURRENT

WHICH IS TRUE ABOUT RESISTANCE IN PARALLEL?

• IT ADDS UP TO A TOTAL VALUE

• IT IS AVERAGED AND USED TO FIND CURRENT

• THE TOTAL VALUE DECREASES AS MORE ARE ADDED IN PARALLELED BRANCHES

• ONLY THE LARGEST VALUE IS USED TO FIND CURRENT

WHICH STATEMENT IS NOT TRUE ABOUT CURRENT IN A PARALLEL CIRCUIT?

• THE CURRENT IS THE SAME IN ALL PARTS OF THE CIRCUIT

• A BRANCH CURRENT DEPENDS ON THE RESISTANCE INT HE BRANCH

• BRANCH CURRENTS ADD UP TO EQUAL THE TOTAL CIRCUIT CURRENT

• THE BRANCH WITH THE LARGEST RESISTANCE WILL HAVE THE LEAST AMOUNT OF CURRENT FLOW

IF THREE LOADS ARE WIRED IN PARALLEL AND ONE FAILS TO CONDUC CURRENT, WHAT WILL HAPPEN?

• THE OTHER TWO LOADS WILL OPERATE NORMALLY

• NONE OF THE LOAD WILL OPERATE

• THE LOAD NEXT TO THE FAILED LOAD WILL NOT OPERATE BUT THE OTHER ONE WILL

• THE OTHER TWO LOADS WILL OPERATE POORLY DUE TO THE INCREASED CURRENT FLOW