The phase difference between the input and output ac voltage signals of a common

CuriousTab

C Programming C# Programming C++ Programming Database Java Programming Networking

Biochemical Engineering Biochemistry Biotechnology Chemical Engineering Civil Engineering Computer Science Digital Electronics Electrical Engineering Electronics Electronics and Communication Engineering Mechanical Engineering Microbiology Technical Drawing

Current Affairs General Knowledge

Data Interpretation Logical Reasoning Non Verbal Reasoning Verbal Ability Verbal Reasoning

AIEEE Bank Exams CAT GATE IIT JEE TOEFL

Analyst Bank PO Database Administrator IT Trainer Network Engineer Project Manager Software Architect

Discussion

Home ‣ Electronics ‣ Bipolar Junction Transistors (BJT) Comments

Question
The phase difference between the input and output ac voltage signals of a common-emitter amplifier is __________.
Options
A. 0�
B. 90�
C. 180�
D. 360�

Correct Answer

180�

Bipolar Junction Transistors (BJT) problems

Search Results

1. V_CE approximately equals ________ when a transistor switch is cut off.
Options
A. V_CC
B. V_B
C. 0.2 V
D. 0.7 V

Discuss

Correct Answer: V_CC

2. An emitter-follower has a voltage gain that is __________.
Options
A. much less than one
B. approximately equal to one
C. greater than one
D. zero

Discuss

Correct Answer: approximately equal to one

3. V_CE approximately equals ________ when a transistor switch is in saturation.
Options
A. V_C
B. V_B
C. 0.3 V
D. 0.7 V

Discuss

Correct Answer: 0.3 V

4. The input resistance, R_in of a common-collector amplifier, consists of ____________.
Options
A. R_in = R_E � AC Current Gain
B.
C. R_in = R_E � ɑ
D. none of the above

Discuss

Correct Answer: R_in = R_E � AC Current Gain

5. The signal voltage gain of an amplifier, A_V, is defined as __________.
Options
A.
B. A_V = I_C x R_C
C.
D.

Discuss

Correct Answer:

6. The input resistance of the base of an emitter-follower is usually _________.
Options
A. very low
B. very high
C. shorted to ground
D. open

Discuss

Correct Answer: very high

7. The silicon-controlled rectifier (SCR) is a three-layer device consisting of a gate, an anode, and a cathode.
Options
A. True
B. False

Discuss

Correct Answer: False

Explanation:

A silicon-controlled rectifier (or semiconductor-controlled rectifier) is a four-layer solid state device that controls current. The name "silicon controlled rectifier" or SCR is General Electric's trade name for a type of thyristor. The SCR was developed by a team of power engineers led by Gordon Hall and commercialized by Frank W. "Bill" Gutzwiller in 1957.

8. A transducer does not convert energy from one form to another.
Options
A. True
B. False

Discuss

Correct Answer: False

9. A TRIAC can be triggered or activated by either a positive or a negative input gate trigger.
Options
A. True
B. False

Discuss

Correct Answer: True

10. A TRIAC will control AC voltage during the positive half cycle only.
Options
A. True
B. False

Discuss

Correct Answer: False

Comments

Enter a new Comment

More in Electronics:

Alternating Current and Voltage Alternating Current vs Direct Current Analog and Digital Converters Analog to Digital Arithmetic Operations and Circuits Basic Op-Amp Circuits Bipolar Junction Transistors (BJT)Capacitors Combinational Logic Circuits Computer Hardware and Software Diodes and Applications Field Effect Transistors (FET)Flip-Flops and Timers Inductors Logic Circuit Simplification Logic Gates Magnetism and Electromagnetism Measurement, Conversion and Control Number Systems and Codes Ohm's Law Operational Amplifiers Parallel Circuits Programmable Logic Devices (PLD)Quantities and Units RC Circuits Resistance and Power RL Circuits RLC Circuits and Resonance Semiconductor Memory Semiconductor Principles Sequential Logic Circuits Series-Parallel Circuits Series Circuits Special-Purpose Op-Amp Circuits Standard Logic Devices (SLD)Testing and Troubleshooting Thyristors and Tranducers Time Response of Reactive Circuits Transformers Transistors and Applications Voltage and Current

Aptitude

Time and Distance
Volume and Surface Area
Problem on Trains
Permutation and Combination

Engineering

Civil Engineering
Computer Science
Mechanical Engineering
Technical Drawing

Programming

C Programming
C# Programming
C++ Programming
Java Programming

Reasoning

Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning

CuriousTab

CuriousTab

Discussion

The phase difference between the input and output ac voltage signals of a common-emitter amplifier is __________.

Bipolar Junction Transistors (BJT) problems

Search Results

More in Electronics:

Aptitude

Engineering

Programming

Reasoning

Links

Social