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Combonation Circuits > Termonology > Flashcards

Termonology Flashcards

1
Q

Why are voltage sources sometimes connected in series?

A

requires more voltage

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2
Q

Why are voltage sources sometimes connected in parallel?

A

To increase current

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3
Q

what happens when voltage sources are incorrectly connected in parallel?

A

the voltage cancels

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4
Q

when voltage sources are connected series opposing , is the sum of the two sources larger or smaller than either of the two sources individually?

A

smaller

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5
Q

what is the relationship between the applied voltage and the load voltage in a parallel circuit?

A

voltage is equal across the circuit

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6
Q

what is the relationship between the line current and the branch currents in a parallel circuit?

A

line current=measures add together

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7
Q

what would happen to the total line current if an open circuit occurred in one of the loads?

A

it would decrease

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8
Q

what would happen to the total line current if a short circuit occurred in one of the loads?

A

increase

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9
Q

the net resistance of a circuit will __________ as more resistors are connected in parallel

A

decrease

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10
Q

In a parallel circuit, the sum of the _______ currents equals the ________ current

A

branch and line

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11
Q

If an open develops in one branch of a parallel circuit , the line current will _______ and the total circuit resistance will ________

A

decrease and increase

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12
Q

The ________ drop across each branch of a parallel circuit is the same

A

voltage

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13
Q

In a parallel circuit, increasing the number of branches will cause the circuit resistance to _______ and the circuit current to _______

A

decrease and increase

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14
Q

If a short develops across one branch of a parallel circuit in a combination circuit then the _______ increases and the _________ decreases

A

current and resistance

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15
Q

In a parallel circuit , the total resistance is always _______ than the lowest branch resistance

A

lower

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16
Q

Whether dealing with a series or a parallel circuit, the total circuit resistance can be found by dividing the total _______ by the total _________

A

voltage and current

17
Q

A simple formula for determining the net resistance of “two resistors” in parallel is by using the ________ over the ________ method

A

product and sum

18
Q

In residential circuit wiring, light outlets and receptacles are connected in _________

A

parallel

19
Q

what happens to the current in a series circuit if you add a resistor?

A

current decreases

20
Q

what happens to the current in a parallel circuit if you add a resistor?

A

current increases

21
Q

What happens to the current in a series circuit if you open a resistor?

A

does not flow

22
Q

what happens to the current in a parallel circuit if you open a resistor bank

A

it decreases

23
Q

Kirchoffs voltage drop law?

A

The sum of all voltages within a closed loop must be equal to zero

24
Q

In a parallel circuit what is the component that stays the same for every branch?

A

voltage

25
Q

what can be moved from circuit to circuit?

A

resistance

26
Q

Is power the same sum in parallel and series?

A

No

27
Q

Overload fuses protect against what?

A

too much current

28
Q

over current fuses protect against what?

A

overloads or short circuits

29
Q

Potentiometer?

A

connected in parallel like a voltmeter and rheostats always connected in series

30
Q

what 4 factors make up resistance in a piece of wire?

A 
MALT 
material 
area 
length
temperature
31
Q

the wheatstone bridge is most commonly used for measuring?

A

measuring accurate resistance

32
Q

equation to find the unknown in a bridge circuit?

A

R1 x Rx = R2 x R3

Combonation Circuits (1 decks)

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