Electrical Engineering MCQs

Page No. 11

A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?


a10.9 V


b1.09 V


c1.1 V


d12 V


View Answer 10.9 V

A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?


a1.1 mV


b11.1 mV


c111 mV


d 200 mV


View Answer 11.1 mV

In a certain low-pass filter, fc = 3.5 kHz. Its passband is____________?


a3.5 kHz


b0 Hz


c0 Hz to 3.5 kHz


d7 kHz


View Answer 0 Hz to 3.5 kHz

In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency_____________?


ais 7 kHz


b is 10 kHz


cis 12 kHz


d cannot be determined


View Answer is 12 kHz

At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V.the filter’s bandwidth is____________?


a530 Hz


b106 Hz


c11.5 Hz


d53 Hz


View Answer 53 Hz

The first goal to accomplish in analyzing a complex series-parallel circuit is to____________?


asolve for all the voltage drops


bsolve for the total current and resistance


cequate all series components


dequate all parallel components



The positive (+) and negative (-) ends of the battery are called ___________?


acircuit diagram


bbattery knobs


cbattery terminals


dbattery sides


View Answer battery terminals

When a Wheatstone bridge is in a balanced condition, the center voltmeter in the bridge will read_____________?


atwice the source voltage


bhalf the source voltage


czero volts


dthe same as the source voltage


View Answer zero volts

In a series–parallel circuit, individual component power dissipation are calculated using_____________?


a individual component parameters


ba percent of the total power depending on resistor ratios


ctotal current squared multiplied by the resistor values


da percent of the voltage division ratio squared



In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2‘s voltage will:___________?


aincrease


bremain the same


cdecrease


dcannot tell


View Answer decrease

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