Electronics Engineering Interview Questions

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Aug 14th, 2018

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Problem: 1. 1100v, 50Hz,delta connected induction motor has a star connected slip ring rotor with stator to stator transformation ratio of 3.8 . the rotor resistance and stand still reactance are 0.012 ohm and 0.25 ohm. Neglecting stator impedance and magnetizing current determine:

i. Rotor current and power factor at start with slip rings shorted.
ii. Rotor current and power factor at 4% slip with slip rings shorted.
iii. External rotor resistance per phase to obtain a starting current of 100A in stator supply lines.

Debjyoti

• Nov 1st, 2018

54

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Dhrubotaa Chatterjee

• Mar 4th, 2018

In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information

Nikhil kumar

• Jan 17th, 2016

Digital electronic are like a modern type electronic if we use morden electronics in our life flip flop is an storage devices which is called toggeld switch also.

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RAMPRIT KUMAR

• Jan 31st, 2018

chakr

• Nov 6th, 2009

Push is used to write into stack1. This is not direct we are not mentioning address here2. It's not register indirect we are not mentioning reg which contain address3. It's not immediate we are not storing immediate valueso answer is 2 it's register addressing

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J-K flip-flop

If the input J is connected through K input of J-K flip-flop, the flip-flop will behave as a 1. D(Delay) type flip-flop 2. T-type flip-flop 3. Toggle Switch 4. 2 or 3 above

vinayaka

• Jan 14th, 2018

D flipflop

MOHD IMRAN

• May 30th, 2015

T(toggle)type flip-flop

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Vinayaka Eshwar Naik

• Jan 14th, 2018

1) Indicates impedance is high at input and reduces towards output
2) Indicates direction of current flow

rucha thakur

• Dec 18th, 2014

ALU + BUFFER =Op-Amp i.e. if we cut Op-Amp symbol vertically from middle, then we get symbols of two components. They are ALU & buffer.

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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 13th, 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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SRN Scheduling

Prove that SRN scheduling provides the minimum average turn around time for a set of requests that arrive at the same time instant.

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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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Avinash

• Aug 30th, 2017

Buffer

uddhav kumbhar

• Nov 12th, 2016

Decoder/buffer integrated circuit

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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 13th, 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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What is the formula for power gain

What is the formula for power gain when input gain & output gain is given?

Amlaku Yalew

• Aug 4th, 2017

=out put gain/input gain

samarth moudgalya

• Jul 28th, 2017

Power in dB is 10log{Output power/input power)

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kato

• Jul 13th, 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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Java Implementation Drive

Which of these drivers have their implementation in Java
a) .Net protocol
b) JDBC-ODBC driver
c) Native-API driver
d) Native protocol

Ankita

• Jul 1st, 2017

JDBC ODBC driver

Anuj Garg

• Mar 22nd, 2017

JDBC-ODBC driver

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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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3 Phase AC Supply

Why 440volts instead of 660volts in 3 phases of supply system?

Asim Bilal

• Jun 22nd, 2017

It is neither 440v nor 660v, it is 381v by formula 220v*underroot 3=381v

Sankareshwaran V

• Mar 13th, 2017

Their should always be a return conductor to close the circuit, so in 3phase one of the phase act as a return conductor.

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Sharief Momin

• Jun 7th, 2017

Both are related to Tools. But Emulators are hardware tools which are copy of actual hardware. some emulators are on chip which will come along with hardware (Micro controller). Simulators are softwar...

TAMILMARAN C

• Apr 3rd, 2017

Simulator - It could simulate all the functional for the desire system

Emulator - It could replicate the entire system, Although we could use as another as similar system preferable.

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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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