Spectrum Electrical Engineering

Spectrum Electrical Engineering Electrical Engineering services, automation and beautification of homes and teaching young engineers

What is an electric motor and on what principle does it work?What is the difference between AC and DC motors?Explain the...
08/05/2026

What is an electric motor and on what principle does it work?

What is the difference between AC and DC motors?

Explain the working of a three-phase induction motor.

What is slip in an induction motor and why is it important?

Why can't an induction motor run at synchronous speed?

What is the difference between squirrel cage and slip ring induction motors?

What is cogging and crawling in induction motors?

Starting & Speed Control

Why are starters needed for induction motors? Ans: it helps to reduce the starting current

Why is starting current high for induction motors? Any motor started directly on line, the starting current is 3 times the rated current.

Explain different methods of starting induction motors (DOL, star-delta, auto-transformer).

How can you reverse the direction of rotation in a 3-phase induction motor? Ans: by interchanging any of the two phases.

How do VFDs (Variable Frequency Drives) help in motor control?

Maintenance & Troubleshooting

What are the causes of hot bearings in a motor?
Ans: misalignment, friction
What causes heating of the armature?

What are the possible reasons a 3-phase motor fails to start?

How can you detect motor faults in real-time industrial environments?

What is single-phasing in 3-phase motors? Ans: if any of the phases is missing which will cause a hissing sound on the motor hence increasing the amperage of the motor that could cause damage to the coil.

DC Motor Specifics

How can the direction of rotation of a DC motor be reversed?

What happens if a DC shunt motor is directly connected to the supply line?

What is the purpose of a 4-point starter?

Common Technical Knowledge

Why is power factor correction important in large motor
installations?

What is the purpose of commutator pitch?

Advantages of stationary armature and rotating field system?
Highlights Spectrum Electrical Engineering Engineering at Meta Mbala Cyril Chukwuebuka

Your answers are needed.

05/05/2026

Rate our works, bring deals we are active Spectrum Electrical Engineering. Highlights . Follow us for more exhibition

05/05/2026

Where are all electricians both industrial and domestic, where's is location so we can connect with work. Mbala Cyril Chukwuebuka Highlights Facebook Marketplace Assistant

02/05/2026

A retired civil servant in Abuja sold his family house without telling his wife or children.
Months before anyone suspected anything, the original house documents had already been quietly moved out of the house for safekeeping.
So when strangers eventually showed up for inspection, it had already gone too far to reverse.
That house wasn’t inherited. It came from years of deductions, years of sacrifice, living inside one of those government quarters that were later sold to occupants.
But retirement changed the balance of power inside the house.
His wife controlled most decisions, and gradually the children adopted her tone until the man who paid for the roof over their heads became almost invisible inside it.
He said there was even a period he fell seriously sick and nobody asked if he had eaten before leaving the house each morning.
Around that same period, his entire gratuity was taken to fund a family business. It was supposed to help everyone. It collapsed before one year.
That was when the quiet planning began. Not loudly, not emotionally but silently. He decided he would rather start life again alone than remain in a house where he felt unwanted.
Months later, the house was sold privately for 90 million.
A smaller house in a quiet suburb was purchased for 18 million, and the rest was secured quietly.
At home, nothing looked suspicious. No arguments, no sudden tension.
Weeks before leaving, clothes were gradually packed under the excuse of sending them to the dry cleaner.
Then one day, he travelled for what was described as a consultancy job. He never returned to that house again.
The truth surfaced the day the new owner sent people to inspect it. Panic started immediately, his children that haven't checked on him since he travelled started
calling nonstop, asking what was going on. That was when he confirmed it himself.
Yes, the house had been sold. By then, nothing could be undone. Attempts were made to trace his new location, but he had already moved carefully and deliberately.
He said something that stayed with me since I heard the story:

“I didn’t abandon my family… I simply inherited myself before they buried me alive."

Men always plan for your retirement because it gets why!
Mbala Cyril Chukwuebuka Highlights Spectrum Electrical Engineering

23/04/2026

Bring deals,we are active.

Chelsea what is happening? Are we still on the drawing board? Highlights Onyi Chelsea
23/04/2026

Chelsea what is happening? Are we still on the drawing board? Highlights Onyi Chelsea

19/04/2026

Happy mothering Sunday to all mothers and my mom's soul to rest in perfect peace, Amen.
Nneka Bekee Bekee Mbala Cyril Chukwuebuka Highlights

16/04/2026

Things are happening ooooooo, let us all be guided because many disabled on the road are informants. Highlights Mbala Cyril Chukwuebuka Spectrum Electrical Engineering .

16/04/2026

Have mercy on me Lord. Mbala Cyril Chukwuebuka Highlights Prince Felix Ike Jehova

13/04/2026

Substandard materials and improper load allocation, in all parking close to elect pole,trees and overhead tanks are real unsafe conditions and act. Highlights steel Okpala Ignatius Chimaobi Chukwuebuka Cyril Mbala

I've just reached 100 followers! Thank you for continuing support. I could never have made it without each and every one...
13/04/2026

I've just reached 100 followers! Thank you for continuing support. I could never have made it without each and every one of you. 🙏🤗🎉

Address

No 4 Nsu Lane, OKIJA STREET MILE ONE
Port Harcourt
500262

Website

Alerts

Be the first to know and let us send you an email when Spectrum Electrical Engineering posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category