CrazyEngineers

Difficulty - Hard

Total Plays - 93

Allowed Time - 15 sec

Best time - 1.063

The average of five consecutive even numbers is 24. What is the smallest number?

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Explanation:
Average = middle term = 24. Numbers = 20, 22, 24, 26, 28. Smallest = 22.

Leaderboard
Difficulty - Hard

Total Plays - 50

Allowed Time - 15 sec

Best time - 1.448

The ratio of speeds of two cars is 4 : 5. If the faster car covers 300 km in 3 hours, how long will the slower car take?

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Explanation:
Faster car’s speed = 300/3 = 100 km/h. Slower = 100 × 4/5 = 80 km/h. Time = 300/80 = 3.75 ≈ 4 hours.

Leaderboard
Difficulty - Medium

Total Plays - 45

Allowed Time - 10 sec

Best time - 1.124

A sum doubles in 8 years at simple interest. In how many years will it triple?

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Explanation:
If it doubles in 8 years, the interest earned = principal. To triple, interest = 2× principal. So time = 8 × 2 = 16 years.

Leaderboard
Difficulty - Hard

Total Plays - 37

Allowed Time - 15 sec

Best time - 1.411

Who designed the first programmable computer concept (Analytical Engine)?

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Explanation:
Babbage proposed the Analytical Engine, which inspired modern computing architectures.

Leaderboard
Difficulty - Hard

Total Plays - 37

Allowed Time - 15 sec

Best time - 0.532

What happens to electrical resistance as temperature increases in a conductor?

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Explanation:
In most conductors, higher temperature increases atomic vibrations, which hinder electron flow and raise resistance. (But in semiconductors, it’s the opposite — resistance drops!)

Leaderboard
Difficulty - Medium

Total Plays - 38

Allowed Time - 10 sec

Best time - 1.208

What unit measures electrical power?

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Explanation:
The watt measures the rate of energy conversion or power in an electrical circuit.

Leaderboard
Difficulty - Medium

Total Plays - 39

Allowed Time - 10 sec

Best time - 1.160

What does CAD stand for?

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Explanation:
CAD software helps engineers design parts and assemblies digitally before production.

Leaderboard
cindrilla
@cindrilla-uEN5oq • Oct 25, 2025

Oct 25, 2025

1.5K

aptitude questions

a sports dealer bought 2000hockey sticks for Rs 350 each.10%of them were found to be defective and unfit to be sold.At what price should he sell the remaining to get...

Like 0 Replies 3
J I J O
@j-i-j-o-Qfo12V • Apr 8, 2026

Apr 8, 2026

1.5K

Query about studying in Singapore..

HI guys, This is for my friend he is a mechanical engineer we studied together. Now he want to go to Singapore for joining MBA. His preferred universities are James...

Like 0 Replies 3
Deasel Weasel
@deasel-weasel-A8LaZa • Apr 8, 2026

Apr 8, 2026

1.6K

What High School Classes Should I Take to be an Engineer?

I'm in high school, and my school offers alot of electives. I already signed up for my engineering class, but was wondering if there are any other classes i should...

Like 0 Replies 4
Kaustubh Katdare
@thebigk • Oct 23, 2025

Oct 23, 2025

186.2K

Is the job market bad right now or warming up?

I’m seeking opinions on the status of the job markets right now, especially for the engineers. Do you think the job market is bad right now or do you think...

Like 3 Replies 2
vinaykumar devarkond
@vinaykumar-devarkond-9KsNLW • Oct 23, 2025

Oct 23, 2025

31.4K

30 Lakhs (in Rupees) to USD?

Rs. 30 Lakhs in USD would be about $36,090, as per USD <> INR exchange rate. If you wish to earn that much salary; you will have to get a...

Like 1 Replies 8
Kaustubh Katdare
@thebigk • Oct 18, 2025

Oct 18, 2025

555

Founder Life : Fair > Loved and Genuine > Perfect!

As a founder, you can’t afford to be perfect.Your real job is to be authentic.Perfection often comes from the need to be loved -but that need can stop you from...

Like 1 Replies 0
Edward Rubahika
@breezy-blogger • Oct 10, 2025

Oct 10, 2025

916

Smell detecting camera/app

So, I am looking for a mobile app/camera to detect smell/scent. One that can be downloaded onto a phone, smart watch that you can point and it detects that this...

Like 1 Replies 1
Kaustubh Katdare
@thebigk • Oct 15, 2025

Oct 15, 2025

21.9K

Will AI Agents Replace Engineers in the Future?

I wonder if AI agents will replace engineers in near future. I want to seek your opinions on this topic because we have engineers from diverse backgrounds and experiences. AI...

Like 9 Replies 5
Boson123
@9dmOsp0 • Aug 2, 2025

Aug 2, 2025

19.8K

Looking for a co-founder for a civil engineering related startup

Hi,I am an aspiring entrepreneur. Not yet hit the elusive glass ceiling but definitely intend to. I have a solution to the next big thing in the infra space. I...

Like 7 Replies 1
Priya M
@priya-mehta • Oct 15, 2025

Oct 15, 2025

20.2K

Which is the best engineering branch for future?

I wish to know which is the best engineering branch for the future? This is for my sister who is looking to decide engineering branch. She’s got good percentage and...

Like 7 Replies 3
Kaustubh Katdare
@thebigk • Oct 17, 2025

Oct 17, 2025

20.6K

India’s E-Passports Are Here: Biometric Chips, Faster Travel, Zero Fraud

India just leveled up its travel game. The government has officially rolled out chip-based biometric e-passports across the country, and it’s a tech upgrade that’s got our engineering hearts racing....

Like 6 Replies 1
PRADIP CHAKRABORTY
@pradip-IwDCOf • Jul 16, 2025

Jul 16, 2025

22.1K

Cam for Inclined Cam Mechanism

Please let me know the manufacturing process of the cam , required for inclined Cam Mechanism equipment.

Like 5 Replies 0
Kaustubh Katdare
@thebigk • Jun 26, 2025

Jun 26, 2025

1.7K

iOS 18.4.1 Update and Issues: Balancing Critical Security Fixes with Emerging User Concerns

Apple recently released iOS 18.4.1 to patch two critical security vulnerabilities that were reportedly being exploited in targeted attacks. While the update is essential for safeguarding devices against these threats,...

Like 5 Replies 2