Agent Ambo · Upskill

Electrical Engineer interview cheat sheet

The Electrical Engineer facts interviewers expect you to know cold. Ten minutes of revision the night before.

Quick revision

Ohm's law
V = IR.
Power (single phase)
P = VI cos φ.
Power (three phase)
P = √3 VL IL cos φ.
Power factor
Real power ÷ apparent power; improve with capacitors.
Transformer rating
In kVA, because losses depend on V and I, not load PF.
Synchronous speed
Ns = 120f ÷ P.
Slip
(Ns − N) ÷ Ns.
MCB vs RCCB
MCB trips on overload/short circuit; RCCB on earth leakage.
Earthing purpose
Safe path for fault current, protecting people and equipment.
Star vs delta
Star: VL = √3 Vph; Delta: IL = √3 Iph.

Must-know topics

Ohm's law, AC/DC circuits and power factorTransformers, motors and generatorsPower systems: protection, relays, switchgearWiring, earthing and safety standardsPLC and automation basicsReading single-line diagrams

Rehearse these out loud

  • Why is power factor important and how do you improve it?
  • Why is a transformer rated in kVA, not kW?
  • What is the purpose of earthing?

Revision is good. Practice is better.

  1. 1Ambo reads your resumeYour skills, projects, years and the role you want next.
  2. 2Then where you’re interviewingAnd how interviewers there question people like you.
  3. 3It maps every topic they could askMust-know first, your own projects included, built into short daily lessons.
  4. 4You practise, then get certifiedInterview Q&A after every lesson, then three proctored rounds ending in a voice interview with Ambo.

Questions, answered.

How should I use this Electrical Engineer cheat sheet?

Revise it the night before and the morning of your interview, then say each answer out loud. It covers Ohm's law, Power (single phase) and Power (three phase) and more.

Is a cheat sheet enough to clear the interview?

It helps you recall facts quickly, but interviewers test how you apply them and follow up on your answers. Practise answering, not just reading.

How is this different from a list of interview questions?

A list is the same for everyone. Ambo builds your course from your resume, your target role and where you're interviewing, then writes every lesson from the interviewer's point of view: what they'll ask, a strong answer, and the follow-up they'll use to test you.

What is the certification test?

Three camera-proctored rounds that unlock one after another: an objective round, a hands-on round (coding or practical tasks for your role) and a voice interview with Ambo, who asks live follow-ups on your answers. Pass all three within 14 days to become TickBig Certified for 12 months.

Revise it, then rehearse it.

Ambo interviews you on Electrical Engineer topics and follows up on what you say.