RL Circuits - General Questions Online Exam Quiz
RL Circuits - General Questions GK Quiz. Question and Answers related to RL Circuits - General Questions. MCQ (Multiple Choice Questions with answers about RL Circuits - General Questions
A 1.5 k resistor and a coil with a 2.2 k inductive reactance are in series across an 18 V ac source. The power factor is
Options
A : 564
B : 0.564
C : 6.76
D : 55.7
The voltages in Problem 5 are measured at a certain frequency. To make the resistor voltage less than the inductor voltage, the frequency is
Options
A : increased
B : decreased
C : doubled
D : not a factor
In a series RL circuit, 12 V rms is measured across the resistor, and 14 V rms is measured across the inductor. The peak value of the source voltage is
Options
A : 18.4 V
B : 26.0 V
C : 2 V
D : 20 V
To increase the current in a series RL circuit, the frequency
Options
A : should be increased
B : should be decreased
C : should be constant
D : cannot be determined without values
A 470 resistor and a coil with 125 inductive reactance are in parallel. Both components are across a 15 V ac voltage source. Current through the inductor is
Options
A : 152 mA
B : 32 mA
C : 12 mA
D : 120 mA
A 1.2 k resistor is in series with a 15 mH coil across a 10 kHz ac source. The magnitude of the total impedance is
Options
A : 152.6
B : 1,526
C : 1,200
D : 942
When the frequency is decreased, the impedance of a parallel RL circuit
Options
A : increases
B : decreases
C : remains constant
D : is not a factor
A 470 resistor and a 200 mH coil are in parallel. Both components are across a 1.5 kHz ac source. The total admittance of the circuit, in polar form, is
Options
A : 12.60 –76° mS
B : 12.18 76° mS
C : 218 –76° mS
D : 12.18 –76° mS
Referring to Problem 23, the reactive power is
Options
A : 10 mVAR
B : 100 mVAR
C : 6.76 mVAR
D : 148 mVAR
A 12 k resistor is in series with a 90 mH coil across an 8 kHz ac source. Current flow in the circuit, expressed in polar form, is I = 0.3 0° mA. The source voltage, expressed in polar form, is
Options
A : 3.84 20.6° V
B : 12.8 20.6° V
C : 0.3 20.6° V
D : 13.84 69.4° V
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