Job Description  

Subject Matter Expert 

Electrical Engineering  Delhi, India    

Your goal – to improve the education process and better the lives of students -- through content production.   

The Culture  

Chegg’s culture celebrates leadership at all levels and does not discriminate based on job descriptions or titles. The culture is open, with our “fast feedback” system implemented to encourage transparency. You will be given latitude to drive and stretch to deliver mutual goals.   

The Role:  Subject Matter Expert 

 A Subject Matter Expert (SME) is a vital source of knowledge, capability, or expertise in ECE (Electrical Engineering). The SME functions as the organizational representative for his/her knowledge area and applies his/her expertise to support the strategic direction of the organization. He/she should be capable and willing to work on core subjects. 

The candidate must be- 

• Excellent in communication skills, both oral and written 
• Having a good hands knowledge on ECE Concepts 
• Proficient with Computers. 

• Willing to work in rotational shifts 

Responsibilities: 

• Authoring Solutions for advanced questions from ECE specializations such as Signals & Systems, Communications, Digital signal processing, Analog circuits, Digital circuits, Control theory, Electrical circuits, Electromagnetic theory. 

• Online answering of questions posted by students abroad from different ECE specializations such as Signals & Systems, Communications, Digital signal processing, Analog circuits, Digital circuits, Control theory, Electrical circuits, Electromagnetic theory. 
• Quality review of solutions given by external answerers 
• Content feedback and online tutoring 
• Video Content Reviews 
• Work on domain specific Ad-hoc Projects 

Requirements: 

1. Techin Electronics & Communication Engineering 

Freshers / Faculty (0-3 years’ experience) - anyone with strong subject knowledge can apply. 

Syllabus: Core 

Analog Circuits:  

• Diode circuits and analysis 

• Clippers, Clampers and Filters 
• Amplifier Circuits and Analysis 
• Small Signal Analysis 
• Operational Amplifier and Applications 
• Differential & Multistage Amplifiers 

• Digital electronics (MOSFET & Bipolar Circuits) 

Signals & Systems: 

• Linear and Non-Linear systems 
• Continuous and Discrete Time Signals & Systems 

• Time-variant and Time-invariant systems 
• Fourier series Analysis 
• Fourier Transforms 
• z-Transforms 
• Laplace transforms 

• Energy spectral density 

Communication Theory: 

• Analog and Digital Communications 
• Modulation techniques- Amplitude (DSB, SSB, VSB, QAM), Angle 

• Phase-locked loop 
• PCM 
• Encoding techniques 
• Wired and wireless communication 
• Shift keying techniques- Amplitude, Frequency, Phase 

• Signal constellation 
• Gaussian random variables 
• Noise 
• Bit-error probability 
• Link-budget analysis 

Digital Circuits: 

• Number system and conversions 
• Boolean Algebra, Logic Gates and Logic Simplification 
• Karnaugh Maps 

• Combinational Circuits (adder-subtractor, compactors, decoders & multiplexers) 
• Sequential Circuits (latches, flip-flops, registers and counters) 
• Derivation of State Graphs and Tables 
• Reduction of State Tables and State Assignments 
• Memory and Storage Devices 

• VHDL for Digital System Design 

Digital Signal Processing: 

• Quantization 

• Direct and inverse z-transform 
• Solution of difference equations 
• Discrete Fourier Transform 
• Fast Fourier Transform 
• FIR and IIR filters 

• Multirate DSP 
• Autocorrelation and Power spectrum estimation 

Syllabus: Should also be able to handle below concepts 

Control Theory: 

• Mathematical modeling of Mechanical & Electrical systems 
• Block diagram reductions 
• Transient and Steady State response Analysis 
• Routh-Hurwitz criteria 
• Steady State errors 

• Root locus Techniques 
• Bode plots and Stability Analysis 
• State space representation of transfer function systems 

Electromagnetic theory and transmission lines: 

• Elements of vector calculus 
• Divergence and curl 
• Gauss’ and Stokes’ theorems 
• Maxwell’s equations 
• Electrostatics and Magneto statics 

• Wave equation and Poynting vector 
• Plane wave propagation 
• Transmission lines 
• Basics Waveguides 
• Basics of Antenna 

Electrical Engineering: 

• Mesh and Nodal analysis 
• Star-delta transformations 
• Circuit Theorems 

• RC, RL and RLC circuits 
• Self and Mutual inductances 
• Frequency response of Filters 
• Two-port networks 
• AC power analysis