B.Tech. in EC, GATE 2017 AIR 18, YouTuber (channel name - STUDENT MODULATOR), 5 years Teaching Experience

Akhilesh Pandey

This course covers detailed solution (with concept) for Important previous year question of trendy concepts on which questions are frequently asked in GATE -EC. It covers question from each subject and overall more than 200 concept described.

Crack GATE ECE for 2019 to get into PSUs, Government Jobs & M.Tech. at IITs. Get great courses along with previous year question papers, answer keys & syllabus by great educators.

Gate (Ece)

GATE (Graduate Aptitude Test In Engineering) Preparation- Electronics & Communication Engineering.

English

Score Booster GATE Questions

Practice Problems

Practice & Strategy

GATE & ESE - EE, EC

GATE, ESE and IIT-JAM

Ace the toughest competitive and government exams in India 

Test Preparation

Concepts covered: Resonance, polar/rectangular representation 
for RLC circuit, V-I relationship for RLC circuit

RLC circuit is in resonance if net voltage is in phase with net current supplied.
For series RLC Circuit: When net 
impedance of circuit is purely real.
For parallel RLC Circuit: When net 
admittance of circuit is purely real.

Question Based on Concept of Resonance, V-I Relation for R, L, C Elements

Concepts covered: Energy band diagram, Intrinsic Carrier 
concentration, extrinsic carrier concentration, shift of Fermi

Silicon is doped with boron to a concentration of 4 × 1017 atoms/cm3. Assume the intrinsic carrier concentration of silicon to be 1.5 × 1010 /cm3. Compared to undoped silicon, the Fermi level of doped 
silicon

Question Based on Fermi Level Shift in Extrinsic Semiconductor

Basic Characteristics of Ideal Op-amp
Concept of Virtual Ground

Inverting Amplifier
For inverting amplifier, input is applied to inverting terminal and non-inverting 
terminal is grounded. So, inverting terminal is assumed to be at virtual ground, i.e.

Non-inverting Amplifier
For non-inverting amplifier, input is applied to non-inverting terminal. So, voltage at 
inverting terminal is

Question Based on Characteristic of op-amp

Stability of Control System
In time domain a system is said to be causal, if system function 
 
Hence, for the control system to be stable (ROC to 
include imaginary axis), it must have all of its poles 
in left half s-plane.

Roots of characteristic equation give the position of closed loop poles. So
A second order control system is stable if both the roots of its characteristic 
equation (closed loop poles) lie in the left half plane (i.e. negative).
GATE- 2011: 1 Mark question

Question Based on Stability of Control System

Amplitude Modulation
In amplitude modulation, the amplitude of the carrier wave is varied in proportion to 
thast of the message (baseband) signal being transmitted.

DSB-SC Amplitude Modulation 
When the modulated signal contains only two sidebands and the carrier is
suppressed, then the process is called as Double Sideband Suppressed Carrier (DSB-
SC) amplitude modulation
Spectrum of DSB-SC AM for Bandlimited Signal

Question Based on Spectrum of Modulated Signal

General Purpose Register
There are six 8-bit general purpose registers: B, C, D, E, H, L
There are three 16-bit general purpose register pairs: BC, DE, HL
HL register pair is default memory pointer, i.e. memory M is stored in the 
address represented by HL pair.
Accumulator: it is an 8-bit re
Special Purpose Register
Program counter (PC):
It is 16-bit register which contains the address of next instruction to be 
executed.
Stack Pointer (SP):
It is a 16-bit register which contain address of data present at the top of stack or 
it points to the data present at the top of stack.
Stack is a part of read/write memory which is used to store temporary data.
When data is stored or push into stack memory, stack pointer is decremented.
When data is accessed from stack memory, stack pointer is incremented.
Op-code and Operand 
Op-code: It indicates the type of operation to be performed for an instruction
Operand: It is a data on which operation is to be performed. Operand can be a 
register, memory location, register pair, 8-bit data address, or 16-bit data address.
Mnemonic code: In 8085, we use mnemonic codes to write programs
Length of Microprocessor Instruction 
It is the number of bytes that an instruction occupies in the memory. For each 
mnemonic 1 byte Hex code is defined and remaining length is due to data. There are 
3 types of instruction on basis of its length
1-byte instruction
MOV A, C : 1 byte Hex code for mnemonic MOV A, C
2-byte instruction:
MVI B, 77 H : 1 byte Hex code for mnemonic MVI B + 1 byte for data
3-byte instruction:
LXI H, 9080 H : 1 byte Hex code for mnemonic LXI H + 2 byte for data

Question based on concept of 8085 instructions length and special purpose registers

D flip-flop 
A D-type flip-flop is a clocked flip-flop which has two stable states. A D-type 
flip-flop operates with a delay in input by one clock cycle, i.e. (data at D is 
passed to Q when CLK is enabled.)
Ring Counter
In ring counter D flip-flop is cascaded such that the output 𝑄𝑛 is applied to the next 
flip-flop and the output 𝑄0 is again fed back to the first flip-flop. 
Johnson (Twisted Ring) Counter
In twisted ring counter D flip-flop is cascaded such that the output 𝑄𝑛 is applied to 
the next flip-flop and the output 𝑄0
̅̅̅̅ is fed back to the first flip-flop.

Question based on Johnson counter and DAC

Fourier Transform
Inverse Fourier Transform
Duality Property of Fourier Transform
Proof of Duality Property
GATE QUESTIONS

Question based on Duality property of Fourier transform

Propagation constant of a Transmission line
Characteristic Impedance of a Transmission line: The characteristic impedance of a transmission line is defined as the ratio of the 
positively travelling voltage wave to the current wave at any point on the line.
Lossless Transmission line
Input impedance on a transmission line
Stub Matching
In a transmission line, if the load is mismatched and a reflected wave 
exists on the line. However, for maximum power transfer, it is desired that load be 
matched to the transmission line,
Stub is a line matching device
An open-circuited stub radiates some 
energy at high frequencies. Consequently, 
shunt short-circuited stubs are preferred.
Stub has the same characteristic impedance 
as the main line.

Question based on Transmission line parameters

Polar Plot
The locus traced by the tip of the phasor as the frequency is varied from 0to infinity

Lag and Lead Network
In control system, compensator is used to improve its steady state as well as its 
dynamic response.

Question based on polar plot, lead and lag network

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B V Reddy

In this course, the educator discusses some basics about Networks helpful for GATE Aspirants.

Networks: GATE

✓Persuing Ph.D ( Research Scholar)
✓M.Sc Physics (Central University) & B.Ed
✓FDP NITTTR , MHRD ( Quantum & Energy Mat.)
✓Experience: 5 year

Rahul Mehla

This Course Basically Covers All The GATE Previous Year Questions Of Electromagnetic Theory (in Hindi)

(Hindi) Tricks To Tackle The EMT GATE Previous Year Questions

Research enthusiast | writer | M.tech in Electronics | Motivator. 

Ankita Bhaskar

The course covers general electronics questions that are asked in interviews to check your grip on basics. here you will find elaborated answers to those questions.

(Hindi) Interesting Electronics Questions

Praveen Kumar Sharma

In this course, the educator is discussing
 gate previous year paper set for different branch and different year.

(Hindi) Previous Year GATE Solution Part 1: GATE and ESE

Ex Deputy Engineer ( BEL ) , GATE Qualified, YouTuber (10x preparation) , Motivational speaker , Mentor

Kartik Bhardwaj

In this course, Kartik Bhardwaj discusses GATE 2018 ECE question paper along with the solutions. The course will be beneficial for GATE/PSU/ESE aspirants.

(Hindi) ECE GATE 2018 - Detailed Solutions

I am an Electronics engineer.Passionate to share my knowledge to students who actually need it.In my subject u definitely go well.

Vaibhav Goel

In this course we will discuss this Preparation Strategy
based on this you will have to follow it and you will surely get your result and accomplish goals.

Lessons

10 lessons • 1h 41m