Electrical Engineering MCQs

Page No. 14

A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?


a1,403 Ω


b4.7 kΩ


c2 kΩ


d3,403 Ω


View Answer 4.7 kΩ

A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?


a24 Ω


b2.4 Ω


c300 Ω


d3,000 Ω


View Answer 3,000 Ω

A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately___________?


a14 mA


b 1.4 mA


c5 mA


d50 mA


View Answer 1.4 mA

A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?


a12 V


b24 V


c0 V


d6 V


View Answer 12 V

A gain of 1000 times in voltage is expressed by_______________?


a60 db


b30 db


c120 db


d600 db


View Answer 60 db

The upper or lower cut off frequency is also called______________frequency?


aResonant


b Sideband


c3 db


dNone of the above


View Answer 3 db

The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to ?


a2 W


b 6 W


c68 W


dNone of the above


View Answer 68 W

The number of stages that can be directly coupled is limited because___________?


a Changes in temperature cause thermal instability


bCircuit becomes heavy and costly


cIt becomes difficult to bias the circuit


dNone of the above



The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?


aMore than


bThe same as


cLess than


d Data insufficient


View Answer More than

The output of a microphone is rated at -52 db. The reference level is 1V under specified conditions. What is the output voltage of this microphone under the same sound conditions?


a5 mV


b2 mV


c8 mV


d5 mV


View Answer 5 mV

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