Alternating Current vs Direct Current - General Questions Online Exam Quiz
Alternating Current vs Direct Current - General Questions GK Quiz. Question and Answers related to Alternating Current vs Direct Current - General Questions. MCQ (Multiple Choice Questions with answers about Alternating Current vs Direct Current - General Questions
What are the two main applications for ac?
Options
A : direct, pulsating
B : electric, magnetic
C : power, information
D : static, dynamic
The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:
Options
A : amplitude
B : frequency
C : wavelength
D : period
One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a signal amplitude value is called the:
Options
A : time/cm control
B : position control
C : intensity control
D : volts/cm control
If current varies periodically from zero to a maximum, back to zero, and then repeats, the signal is:
Options
A : direct
B : alternating
C : pulsating
D : repetitive
What voltage will an ac voltmeter display?
Options
A : rms
B : average
C : peak
D : peak-to-peak
What is the peak value of a household appliance that uses a 230 V ac source?
Options
A : 163 V
B : 230 V
C : 325 V
D : 480 V
What is the waveform period difference between the 60 Hz electricity used in this country and the 50 Hz used in Europe?
Options
A : 3 ms
B : 16 ms
C : 4 ms
D : 20 ms
Test equipment selection enables the technician to both generate signals and:
Options
A : change circuit conditions
B : inject signals
C : sense circuit conditions
D : change signal frequencies
Why is ac current transfer more effective than dc current transfer over long distances?
Options
A : due to the height of power lines
B : due to the use of ac generators
C : due to step-up and step-down transformers reducing I 2 R losses
D : due to very high voltages
A sine wave reaches maximum positive voltage at:
Options
A : 90°
B : 0°
C : –90°
D : 360°
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