Flashcards in Termonology Deck (32):
1
Why are voltage sources sometimes connected in series?
requires more voltage
2
Why are voltage sources sometimes connected in parallel?
To increase current
3
what happens when voltage sources are incorrectly connected in parallel?
the voltage cancels
4
when voltage sources are connected series opposing , is the sum of the two sources larger or smaller than either of the two sources individually?
smaller
5
what is the relationship between the applied voltage and the load voltage in a parallel circuit?
voltage is equal across the circuit
6
what is the relationship between the line current and the branch currents in a parallel circuit?
line current=measures add together
7
what would happen to the total line current if an open circuit occurred in one of the loads?
it would decrease
8
what would happen to the total line current if a short circuit occurred in one of the loads?
increase
9
the net resistance of a circuit will __________ as more resistors are connected in parallel
decrease
10
In a parallel circuit, the sum of the _______ currents equals the ________ current
branch and line
11
If an open develops in one branch of a parallel circuit , the line current will _______ and the total circuit resistance will ________
decrease and increase
12
The ________ drop across each branch of a parallel circuit is the same
voltage
13
In a parallel circuit, increasing the number of branches will cause the circuit resistance to _______ and the circuit current to _______
decrease and increase
14
If a short develops across one branch of a parallel circuit in a combination circuit then the _______ increases and the _________ decreases
current and resistance
15
In a parallel circuit , the total resistance is always _______ than the lowest branch resistance
lower
16
Whether dealing with a series or a parallel circuit, the total circuit resistance can be found by dividing the total _______ by the total _________
voltage and current
17
A simple formula for determining the net resistance of “two resistors” in parallel is by using the ________ over the ________ method
product and sum
18
In residential circuit wiring, light outlets and receptacles are connected in _________
parallel
19
what happens to the current in a series circuit if you add a resistor?
current decreases
20
what happens to the current in a parallel circuit if you add a resistor?
current increases
21
What happens to the current in a series circuit if you open a resistor?
does not flow
22
what happens to the current in a parallel circuit if you open a resistor bank
it decreases
23
Kirchoffs voltage drop law?
The sum of all voltages within a closed loop must be equal to zero
24
In a parallel circuit what is the component that stays the same for every branch?
voltage
25
what can be moved from circuit to circuit?
resistance
26
Is power the same sum in parallel and series?
No
27
Overload fuses protect against what?
too much current
28
over current fuses protect against what?
overloads or short circuits
29
Potentiometer?
connected in parallel like a voltmeter and rheostats always connected in series
30
what 4 factors make up resistance in a piece of wire?
MALT
material
area
length
temperature
31
the wheatstone bridge is most commonly used for measuring?
measuring accurate resistance
32