Final Review Flashcards
A triangle which contains one 90 angle is called a?
Right triangle
A right angle is an angle of
90°
And I right triangle, the longest side is called the
Hypotenuse
The Pythagorean theorem is
C² = a² + b²
A line that indicates both magnitude and direction is a
Vector
Vectors must be adding using using _________addition
Rectangular addition
One method of adding two vectors that originate at the same point is the
Parallelogram method
A device used to change DC into AC is called a
Oscillator
A __________ wave is waveform which zigzags up and down in straight lines
Triangle Wave
A wave in which the voltage rises at a constant rate with respect to time is a?
Linear wave
Rotating machines alternators normally produce a wave shape which is called a?
Sine wave
Alternating current waveforms repeat the same shape over and over from the beginning of one shape to the end of that shape is called
Cycle
The number of cycles complete in one second is called the
Frequency
The unit of frequency is the
Hertz
The value of AC which produces the same amount of heat as DC and load is called the?
RMS value of the AC
Another term used to indicate the same as the RMS value is the?
Effective value
The unit of measure of the power delivered to the load in a DC circuit is?
Watts
I load that will convert all of the delivered power into another form of energy
Resistive load
In an AC circuit, the voltage and current are frequently both sine waves. If they both pass through zero heading in the same direction at the same time they are said to be
In phase
The tendancy for high frequency AC current to travel near the outer part of conductors cause the resistance of these conductors to be higher than on low frequency conducters, this is known as
Skin effect
Current flowing in a conductor and particularly in a coil causes a magnetic field around the conductor or coil The magnetic field in turn induces voltage and current back into the original conductor or coil. That action is caused by characteristics name
Inductance
When current flows in a conductor, a magnetic field is created. The magnetic field cuts the conductor which creates a voltage in the conductor. This voltage is called
Induced voltage
The current limiting property of an inductor is called
Reactance
The unit of inductance is the
Henry