Electrical Engineering Mcqs — Test 107
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Question 1
A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?
Question 2
A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?
Question 3
A gain of 1000 times in voltage is expressed by_______________?
Question 4
A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?
Question 5
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___________?
Question 6
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 ?
Question 7
The upper or lower cut off frequency is also called______________frequency?
Question 8
The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?
Question 9
The number of stages that can be directly coupled is limited because___________?
Question 10
If the power level of an amplifier reduces to half, the db gain will fall by___________?