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Electronics

391 of 433 questions match · page 9 of 20. Answer in your head first, then check the solution.

📘 EE Mock Board Exam
TypeAll 391Problem solvingObjective 391
DifficultyAll 433Easy 391Medium 42Hard
✕ Clear filters
#161📘 reviewer_appEasy
In class A amplifier, the output signal is
Adistorted
Bthe same as input
Cclipped
Dsmaller in amplitude than the input
#162📘 reviewer_appEasy
What happens if the input capacitor of a transistor amplifier is short-circuited?
Abiasing conditions will change
Btransistors will be destroyed
Csignals will not reach the base
Dbiasing will stabilize
#163📘 reviewer_appEasy
Which is used to establish a fixed level of current or voltage in a transistor?
Abiasing
Bloading
Cload line
Dcoupling
#164📘 reviewer_appEasy
Which power amplifier has the highest collector efficiency?
Aclass A
Bclass C
Cclass B
Dclass AB
#165📘 reviewer_appEasy
_____ is a non-linear type of amplifier.
Aclass C
Bclass AB
Cclass B
Dclass A
#166📘 reviewer_appEasy
An AF transformer is shielded to
Akeep the amplifier cool
Bprevent induction due to stray magnetic fields
Cprotect from rusting
Dprevent electric shock
#167📘 reviewer_appEasy
Amplitude distortion is otherwise known as _____ distortion.
Aintermodulation
Bharmonic
Cphase
Dresonant
#168📘 reviewer_appEasy
Class C is an amplifier whose output current flows for
Aless than one half of the entire input cycle
Bthe entire input cycle
Ctwice the entire input cycle
Dgreater than one half the entire input cycle
#169📘 reviewer_appEasy
Which is not a basic BJT amplifier configuration?
Acommon-drain
Bcommon-base
Ccommon-emitter
Dcommon-collector
#170📘 reviewer_appEasy
The value of collector load resistance in a transistor amplifier is _____ the output impedance of the transistor.
Aequal to
Bmore than
Cless than
Dnot related to
#171📘 reviewer_appEasy
What is the purpose of RC or transformer coupling?
Ato block ac
Bto separate bias of one stage from another
Cto increase thermal stability
Dto block dc
#172📘 reviewer_appEasy
The bandwidth of a single stage amplifier is _____ that of multistage amplifier.
Aequal to
Bless than
Cmore than
Dindependent
#173📘 reviewer_appEasy
_____ is the time taken by the electrons or holes to pass from the emitter to the collector.
Atransit time
Brecombination
Ctransient time
Dduty cycle
#174📘 reviewer_appEasy
The basic concept of the electric wave filter was originated by
ACampbell and Wagner
BNorton
CFoster
DBode and Darlington
#175📘 reviewer_appEasy
Which configuration has the lowest current gain?
Acommon-base
Bcommon-collector
Ccommon-emitter
Demitter follower
#176📘 reviewer_appEasy
What transistor configuration offers no phase reversal at the output?
Acommon-base
Bcommon-collector
Ccommon-emitter
DBoth A and B
#177📘 reviewer_appEasy
The number of stages that can be directly coupled is limited because
Achange in temperature can cause thermal instability
Bcircuit becomes heavy and costly
Cit becomes difficult to bias the circuit
Dcircuit's resistance becomes too large
#178📘 reviewer_appEasy
The input capacitor in an amplifier is called _____ capacitor.
Acoupling
Bstray
Cbypass
Delectrolytic
#179📘 reviewer_appEasy
AC load line has a/an ______ slope compared to that of dc load line.
Azero
Bsmaller
Cbigger
Dinfinite
#180📘 reviewer_appEasy
A multistage amplifier uses at least how many transistor?
A1
B3
C4
D2

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