• #### 1.  A vector quantity has

• Only magnitude
• Only direction
• Both (a) and (b)
• none of these
• #### 2.  The repetition of a variable quantity, recurring at equal intervals, is known as ___________

• Waveform
• Instantaneous value
• Cycle
• Period
• #### 3.  The variation of a quantity such as voltage or current shown on a graph is known as ___________

• Waveform
• Peak value
• Instantaneous value
• Period

• 0 and 90
• 90 and 180
• 90 and 270
• 180 and 360

• 25%
• 50%
• 71%
• 90%

• Zero
• One
• Eleven
• Infinity
• #### 7.  Alternating voltage (V) is represented by the equation

• V(t) = Vm eωt
• V(t) = Vm sin ωt
• V(t) = Vm cot ωt
• V(t) = Vm tan ωt

• step up
• rectified
• amplified
• intensified
• #### 9.  AC generators works based on

• Lenz Law
• Newton's Law
• electrostatic law
• #### 10.  The resistor in an AC will cause

• no phase difference
• I lags V

• resistance
• capacitance
• inductance
• #### 12.  AC generators used to produce alternating current by converting

• kinetic energy into potential energy
• potential energy into electrical energy
• kinetic energy into electrical energy
• electrical energy into kinetic energy

• filament
• X-ray tube
• transformer
• anode
• #### 14.  The combination of resistance, capacitance and induntance is referred to

• impedance
• reactance
• angular frequency
• amplitude
• #### 15.  The most common waveforms of ac is

• square wave
• triangular wave
• complex wave
• sine wave
• #### 16.  What is the duration of one cycle known as _________

• Waveform
• Peak value
• Instantaneous value
• Period

• amplitude
• wavelength
• time
• frequency
• #### 18.  The maximum instantaneous value measured from zero value is known as?

• Peak value
• Peak to peak value
• Cycle
• Period

• Cycle
• Cycle-second
• Hertz/second
• hertz
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