Worksheetsharmonics
Total questions: 10
Worksheet time: 7mins
What is the fundamental frequency
50hz
60hz
100hz
150hz
What is the 4th harmonic
(a)
What Is a harmonic
Sinewave
Ripple
Distorted sinewave
Square wave
Signs of harmonics include
Smoke
Heat
Noise
Smell
which electrical equipment is mostly likely to cause harmonics
induction motor
alternator
variable frequency drive
inverter
what is resonance
Xl=Xc
Xl=R
Xc=R
Z=R
what is common to install in a circuit with odd harmonics
a smaller neutral
a larger neutral
no neutral
earth
harmonics can be reduced by
inverters
filters
regulators
shields
in a series circuit at resonance if circuit impedance is at a minimum what is at a maximum
(a)
ripple control blocking inductors are connected
in series with capacitors
in parallel with inductors
in series with a load
in parallel with a voltmeter
