Fourth Period Math Applications

Question 1

Describe Kirchoffs Voltage Law:

Answer 1

The total voltage rise or applied voltage equals the total voltage drops in a circuit.

Question 2

What value is equal in each branch of a Parallel circuit?

Answer 2

Voltage

Question 3

Describe Ohm’s Law:

Answer 3

Voltage is directly proportional to Current and inversely proportional to Resistance

Question 4

What is the formula for solving total resistance in a Parallel circuit?

Answer 4

Rt = (R1^-1 + R2^-1 + R3^-1) -1

Question 5

A series-parallel circuit has one path for current to flow. T or F?

Answer 5

False.

Question 6

Name the sides of a right angle triangle:

Answer 6

Hypotenuse, the adjacent side and the opposite side

Question 7

The combined effect of resistance, inductive reactance and capacitive reactance in a circuit is called?

Answer 7

Impedance - A.C circuit

Question 8

Inductive reactance causes current to ______ voltage

Answer 8

Lag , E.L.I

Question 9

Describe Capacitance:

Answer 9

The property of a circuit that allows it to store energy in the electrostatic field and release it back to the circuit. Because a capacitor is a DEVICE that stores and releases energy, it has a tendency to oppose any change in VOLTAGE.

Question 10

Describe the phase angle:

Answer 10

The number of degrees by which the current through a component leads or lags the voltage across the component.

Question 11

State another name for True Power or Power (P) in a circuit:

Answer 11

Real or active power.

Question 12

State a formula for the power factor other than
P/S:

Answer 12

R/Z or W/VA

Question 13

In Parallel,what is the PF of a pure Inductor? Lead or Lag?

Answer 13

0 with a 90 deg Lag

Question 14

What is the PF of a Resistor? Lead or Lag?

Answer 14

1 In Phase

Question 15

What does PF represent in a 3 phase Wye/Delta System?

Answer 15

The angle between the Phase Current and Phase Voltage.

Question 16

Do not use which type of Triangles in which situation?

Answer 16

Impedance Traingles in parallel branches to get Z total of the circuit

Question 17

Which formula is best for finding Q in either Series or Parallel RLC circuits?

Answer 17

Question 18

What does Theta mean when we say “cos ø” (Cos Theta)?

Answer 18

Theta is just a way of saying…

“the angle we are dealing with for this calculation”

Question 19

Which is the superior formula for finding True Power? (P)

Answer 19

P = I²R

Question 20

In a resistive circuit Current is In Phase with Voltage.

True or False?

Answer 20

True

Question 21

In an inductive circuit Current lags voltage. True or False?

Answer 21

True.

Question 22

In a capacitive circuit current leads voltage. True or False?

Answer 22

True.