Form factor for a sine wave is________?
Form factor for a sine wave is________?
A. 1.414
B. 0.707
C. 1.11
D. 0.637
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The inductance of a coil can be increased by_________?
The inductance of a coil can be increased by_________?A. increasing core length
B. decreasing the number of turns
C. decreasing the diameter of the former
D. choosing core material having high relative permeabilityThe r.m.s. value of pure cosine function is_________?
The r.m.s. value of pure cosine function is_________?A. 0.5 of peak value
B. 0.707 of peak value
C. same as peak value
D. zeroFor the same peak value which of the following wave will ‘have the highest r.m.s. value?
For the same peak value which of the following wave will ‘have the highest r.m.s. value?A. square wave
B. half wave rectified sine wave
C. triangular wave
D. sine waveIn series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?
In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?A. will change the maximum value of current at resonance
B. will change the resonance frequency
C. will change the impedance at resonance frequency
D. will increase the selectivity of the circuitThe r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of_______degrees?
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of_______degrees?A. 90
B. 60
C. 45
D. 30The frequency of an alternating current is____________?
The frequency of an alternating current is____________?A. the speed with which the alternator runs
B. the number of cycles generated in one minute
C. the number of waves passing through a point in one second
D. the number of electrons passing through a point in one second