Home | CrazyEngineers

Difficulty - Hard

Total Plays - 37

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.

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PRADIP CHAKRABORTY
@pradip-IwDCOf • Oct 27, 2024

Oct 27, 2024

467.0K

DESIGN ON SMALL MECHANICAL EQUIPMENT

I want some Mechanical Engineering related design on small Mechanical Jigs and Fixture, for smooth running of a Production Engineering related plant.

Like 8 Replies 0
Boson123
@9dmOsp0 • Aug 2, 2025

Aug 2, 2025

19.5K

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

19.9K

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
Difficulty - Hard

Total Plays - 43

Allowed Time - 15 sec

Best time - 4.522

What is the core promise of Quantum Computing?

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Explanation:
Quantum computers exploit superposition and entanglement to solve certain problems exponentially faster.

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Difficulty - Medium

Total Plays - 40

Allowed Time - 10 sec

Best time - 2.893

Which metal is liquid at room temperature?

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Explanation:
Mercury stays liquid around 25°C while most metals are solid.

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Difficulty - Medium

Total Plays - 33

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.

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Difficulty - Medium

Total Plays - 28

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.

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Difficulty - Medium

Total Plays - 29

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.

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Kaustubh Katdare
@thebigk • Oct 17, 2025

Oct 17, 2025

20.3K

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
Kaustubh Katdare
@thebigk • Jul 20, 2025

Jul 20, 2025

20.6K

OpenAI's Social Network Vs Twitter - The Battle for Real-Time Data

I’m sure you’ve heard the news of OpenAI planning to build its own social network like “X”. One may wonder why’d an AI company want to build a social network....

Like 6 Replies 4
The_Small_k
@the-small-k • Dec 29, 2025

Dec 29, 2025

279.6K

Exploring the Potential of AI in Software Development: Can AI Replace Software Developers in the Industry?

Hello engineers,I have always underestimated the potential of AI in understanding human language, which is why I never bothered to learn about it. However, the launch of ChatGPT has completely...

Like 5 Replies 4
Difficulty - Medium

Total Plays - 49

Allowed Time - 10 sec

Best time - 8.264

Which energy trend is scaling the quickest globally?

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Explanation:
Solar and wind installations are growing aggressively because of falling costs and policy pushes.

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asif ali
@MGPpdcJ • Dec 2, 2025

Dec 2, 2025

474.8K

Discussion Topic: The Importance of Digital Platforms in Utility Management

Discussion Topic: The Importance of Digital Platforms in Utility ManagementHi fellow engineers! 👋As we all know, technology is rapidly changing how we manage everyday tasks, from paying bills to monitoring...

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Difficulty - Hard

Total Plays - 30

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.

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Difficulty - Hard

Total Plays - 30

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!)

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PRADIP CHAKRABORTY
@pradip-IwDCOf • Jul 16, 2025

Jul 16, 2025

21.9K

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

1.4K

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
Gaurav Yadav
@P0SgsSH • Feb 9, 2025

Feb 9, 2025

300.6K

Can I get a job in MNC with less than 60% In 10th and 12th?

I am in btech 2nd year .i have secured 58% in 10th and 59% in 12th .and my current sgpa in engineering is 6.0 sgpa.can i gota placement in MNCS.

Like 5 Replies 5
Julian Cross
@hCKNKn6 • Feb 12, 2026

Feb 12, 2026

400.9K

Does anyone have experience with High Voltage DC Testing?

Does anyone here have experience with High Voltage DC testing? I work in Automotive Validation Testing, focusing on Test Equipment design, DAQ, and LabVIEW for typical automotive products. Our current...

Like 4 Replies 2