# Electronics Engineering Interview Questions

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Jul 16th, 2020

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#### Excess-3 Code

What is a BCD? What are its advantages and disadvantages? Why is an excess-3 code is called an unweighted code?

#### Namita Chhantyal

• Dec 14th, 2017

BCD is a binary coded decimal that can represent each decimal digits into its respective 4 binary bit. The advantage is that it is easy to convert into BCD code from decimal digit and vice-versa. ...

#### gurulakshmi05

• Jul 1st, 2009

BCD means Binary coded decimal, its advantage is it can represent decimal numbers in the form of binary value says (0000-0 to 1001-9). Binary codes are divided into weighted binary code and non wei...

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#### What is Biasing?

• Jul 6th, 2006

Biasing means applying the DC voltage across the device for its correct operation.

#### Rachna Jain

• Nov 15th, 2017

The process of applying the external voltage source to any electronic device to turn on its operation is known as biasing. Biasing are of two types namely forward biasing and reverse biasing.

#### Amit Kumar Singh

• Sep 11th, 2017

Applying external DC voltage to any electronic device is called biasing. Depends upon the polarity of DC voltage externally to it, the biasing classified as forward and reverse biasing.

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#### ROM and RAM cards

Which of the following is is used to hold ROM and RAM cards 1. Computer Bus 2. Expansion cards 3. Mother Board 4. Cache memory

#### Kato

• Jul 14th, 2017

Mother Board.
ROM they are not connected in slots they are installed in mother board so the answer is MOTHER BOARD

#### sathya.R

• Dec 25th, 2016

Mother board

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#### What is a sequential circuit and What is a combinational circuit?Is there any difference between them? If yes what is it?

• Sep 11th, 2007

Combinational circuit are those whose output depends only upon the present inputs but in sequential circuit the output depends upon both present and past inputs. that is the difference.?

#### Rajdeep Ashok Vartak

• Aug 10th, 2017

In digital electronics, both circuits are very important. half adder, full adder, half substractor, full substractor, parallel adder, encoder, decoder, multiplexer, demultiplexer etc are under Combina...

#### Kato

• Jul 14th, 2017

The combinational ckt provides output considering only the input, but the sequential ckt provides output by considering both input and its state (Past input)

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#### kato

• Jul 14th, 2017

When we apply zero volt or ground to the +terminal of an opamp the -terminal also has such low voltage because of high input impedance that is called as virtual ground since it is not ground itself

#### soumya gupta

• Jul 11th, 2017

When the input nodes of an opamp are taken as ground in the negative feedback condition, then its known as virtual ground.

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#### What is meant by filter? What are the different types of filters?

The output of the rectifier pulsating in nature, it consists of a desired DC component of voltage and unwanted ripple components. These ripple components are removed by placing filter circuit at the output of the rectifier.Types of filters: 1. capacitor filter 2. series inductor filter 3. LC filters of following two types (a)capacitance input filter (b)inductance unput...

#### gajanan ghawale

• Jun 27th, 2017

In order to remove DC component which are left behind the Rectifier circuit output, the circuit consist combination of resistor capacitor or Inductor is known as filter

#### Deepali Goyal

• Jun 10th, 2017

Filter is used to select only a particular range of frequencies. Filters are basically are of two types
1. Active Filters
2. Passive Filters

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#### Race Around Condition

What is Race Around Condition in a JK FlipFlop? How it can be avoided?

#### Arindam Nag

• May 14th, 2017

It can be overcome when clock pulse will be over.clk=0

#### Pulkit Aggarwal

• Apr 14th, 2017

When J=K=1 and Q=0 and clock input is applied after a time interval t equal to propagation delay, output Q=1. Now, we have J=K=Q=1 and after another time interval t output changes back to Q=0...

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#### Difference between 8085 and 8086 Microprocessor?

Hi Guys,

Give here your suggestion about microprocessor 8085 and 8086. These 2 processors used in old time. I want to know its program execution time, memory space.

#### Rakesh

• Jun 17th, 2016

As we know 8086up supports pipeline so it is faster than 8085up which is don't support pipeline. Due to 20 address line, 8086 has more memory space than 8085up which has 16 address line (1MB former, 64KB later)

#### suchithra

• May 1st, 2016

8086 can perform byte or word operation and available in 3 clock version

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#### Op-amp

Why are the 2 input terminals of an op-amp are called as inverting & non-inverting terminals?

#### SUJITH

• Jul 15th, 2015

A high Input at inverting terminal with respect to other give a inverted output where as a high input at non-inverting terminal gives the same as output

#### krishnakant

• Jul 31st, 2014

The differential amplifier can perform all the arithmetic operations such as addition subtraction even integration so need operational amplifier but basically it is a directly coupled high gain amplif...

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#### Biasing for Transister Circuits

Why we need biasing for Transister, FET and MOSFET.?What is the importance of the biasing in transister circuits.

microelectronics

• Member Since Oct-2009 | Dec 25th, 2009

Biasing of transistor circuits is done for making it work in the desired region of operation.?

#### supersindhu

• Sep 12th, 2014

Biasing is required to make transistor in active mode

#### Sagar21p

• Oct 7th, 2010

Biasing means operationg the transistors in a particular region it could be either active(linear),cuttoff(off swith),saturation(nonlinear)For BJT*active region it acts as an amplifier EB jn is FB and ...

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#### Bridge Rectifiers

Why we are using the bridge rectifier in most of the circuits instead of full wave rectifier eventhough the output of both are same?

#### HARENDRA K PUSHPAT

• Aug 4th, 2014

Because PIV rating of center tapped rectifier in twice then the bridge type of rectifier.

#### cubangeekboy

• Nov 21st, 2008

Bridge rectifiers use transformer that do not employ a center tap, thereby permitting the use of smaller transformers. this saves space, cost and is more effecient.

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#### Edge Triggered and Level Triggered Flip Flop

What are edge triggered flip flop and level triggered flip flop? How do they differ from one another?

#### Brijesh Ranga

• Aug 2nd, 2013

Level trigger ff work only the level of the signal either high(1) or low(0) but edge trigger work on the either rising edge or talling edge

#### krishna

• Apr 17th, 2013

Apart from the answers above, it is important to note that edge triggered flip flops have advantage over level triggered flip flops.?

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#### gopichand

• Jun 21st, 2013

Hi guys,
here the information about 1 start and 1stop bit is given to confuse the candidate ,
in synchronous transmission there is no need of start and stop bits so 2400/(7+1) is the ans..........

#### samatha

• Jun 15th, 2013

Start an d stop bits are not needed so it is 2400/8=300