What is the corresponding change in level for a factor of 10 change in power?(a) 100dB(b) 20dB(c) 10dB(d) 0.1dBThe question was asked by my school principal while I was bunking the class.This intriguing question originated from The Decibel topic in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

What is the corresponding change in level for a factor of 10 change in

1.	What is the corresponding change in level for a factor of 10 change in power?(a) 100dB(b) 20dB(c) 10dB(d) 0.1dBThe question was asked by my school principal while I was bunking the class.This intriguing question originated from The Decibel topic in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
Answer» Right ANSWER is (c) 10dB Easiest explanation: A decibel is ten TIMES the value of power in its logarithm in base 10. Therefore a 10dB change is RESULTANT of a change in power by a factor of 10. HOWEVER, when calculating in terms of amplitude the change is DUE to a factor on 20.

Discussion

No Comment Found

Related InterviewSolutions

There is no collector resistance in a simplified CC amplifier configuration.(a) True(b) FalseThis question was posed to me in a national level competition.The question is from Simplified Calculations for the CC Configuration in portion Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
How do we compute the base impedance of a simplified CC amplifier?(a) β × (Re – re‘)(b) β × (Re + re‘)(c) RB || β × (Re – re‘)(d) RB || β × (Re + re‘)I had been asked this question in class test.My question comes from Simplified Calculations for the CC Configuration in portion Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
How is the voltage gain measured in a cascading transistor configuration?(a) Volts(b) Ampere(c) Decibels(d) DimensionlessThis question was posed to me in quiz.This interesting question is from The Cascode Transistor Configuration in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
What is the advantage of using a cascading transistor configuration?(a) High gain and high bandwidth(b) High gain and low bandwidth(c) Low gain and high bandwidth(d) Low gain and low bandwidthI have been asked this question during an interview.This intriguing question originated from The Cascode Transistor Configuration in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
What is the total voltage gain of a cascading transistor configuration if input of first stage is 50V and the output of the second stage is 100V?(a) 20(b) 0.2(c) 2.5(d) 2The question was asked during an internship interview.My question is based upon The Cascode Transistor Configuration in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
The coupling device is essential for a cascading transistor configuration.(a) True(b) FalseI had been asked this question during a job interview.I would like to ask this question from The Cascode Transistor Configuration in portion Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
What is the value of β in a high input resistance transistor amplifier circuit amplifier if Vf = 7V and VO = 6.89V?(a) 1(b) 1.12(c) 1.4(d) 0.124The question was posed to me in a job interview.My doubt is from High Input Resistance Transistor Circuit in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
How many methods of coupling are used for a cascading transistor configuration?(a) 3(b) 4(c) 2(d) 5This question was addressed to me in a job interview.My enquiry is from The Cascode Transistor Configuration topic in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
What is the total voltage gain of a difference amplifier if the gain of first stage is 4.8 and the gain of the second stage is 1.2?(a) 6.75(b) 6.55(c) 5.76(d) 5.65This question was posed to me by my school teacher while I was bunking the class.This is a very interesting question from Transistor Difference Amplifiers in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits
What is the advantage of using CB amplifier configuration in a cascading transistor configuration?(a) High efficiency(b) Low distortion(c) Good high frequency operation(d) Good low frequency operationI had been asked this question in class test.I'd like to ask this question from The Cascode Transistor Configuration in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment