CrazyEngineers

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Difficulty - Hard

Total Plays - 206

Allowed Time - 15 sec

Best time - 0.457

A father is 36 years old and his son is 6. In how many years will the father be exactly three times as old as the son?

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Explanation:
In 9 years, father will be 45 and son will be 15. 45 is 3 times 15.

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Difficulty - Medium

Total Plays - 149

Allowed Time - 10 sec

Best time - 1.324 sec

Identify the next number in the series -

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2 -> 3 -> 5 -> 7 -> 11 -> [ ? ]

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Explanation:
These are prime numbers. 13 is the next prime after 11.

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Difficulty - Medium

Total Plays - 150

Allowed Time - 10 sec

Best time - 0.380 sec

If it takes 5 machines 5 minutes to make 5 widgets, how long would 100 machines take to make 100 widgets?

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Explanation:
Each machine makes 1 widget in 5 minutes. So 100 machines will make 100 widgets in 5 minutes, working in parallel.

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Difficulty - Medium

Total Plays - 140

Allowed Time - 10 sec

Best time - 0.582

What does a capacitor store?

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Explanation:
A capacitor stores energy in the form of an electric field between its plates. It doesn't store current or voltage directly.

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Difficulty - Hard

Total Plays - 131

Allowed Time - 15 sec

Best time - 0.515

What is the antonym of “Obscure”?

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Explanation:
"Obscure" means unclear or hidden. Its opposite is clear.

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Difficulty - Medium

Total Plays - 131

Allowed Time - 10 sec

Best time - 1.262

Choose the word that best fits the sentence:

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He is very good ___ playing chess.

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Explanation:
The correct preposition after "good" (when talking about skill) is "at".

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Difficulty - Medium

Total Plays - 123

Allowed Time - 10 sec

Best time - 0.887

Identify Next Number In the Series: 2, 6, 12, 20, 30, ?

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Explanation:
The pattern is +4, +6, +8, +10, +12... So, 30 + 12 = 42

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Difficulty - Medium

Total Plays - 109

Allowed Time - 10 sec

Best time - 1.610

Identify this commonly used engineering tool

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Explanation:
A claw hammer is used for driving nails into wood and removing them using the curved claw. It’s a common tool in carpentry and general household repairs.

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Difficulty - Medium

Total Plays - 110

Allowed Time - 10 sec

Best time - 1.225 sec

Identify this famous logo of famous energy drink

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Explanation:
This is the logo of famous energy drink "Red Bull"

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Difficulty - Medium

Total Plays - 95

Allowed Time - 10 sec

Best time - 1.058 sec

Choose the word most similar in meaning to: "Eloquent"

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Explanation:
“Eloquent” refers to clear, strong, and persuasive speech or writing.

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Difficulty - Medium

Total Plays - 87

Allowed Time - 10 sec

Best time - 1.659 sec

What is the next number in the series?

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2 -> 4 -> 8 -> 16 -> ??

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Explanation:
Each number is multiplied by 2 to get the next number (2×2=4, 4×2=8, etc.).

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Difficulty - Hard

Total Plays - 102

Allowed Time - 15 sec

Best time - 1.592 sec

A clock shows the time as 3:15. What is the angle between the hour and the minute hands?

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Explanation:
At 3:15, the minute hand is at 3 (i.e., 90°), and the hour hand is slightly ahead of 3. Every minute, the hour hand moves 0.5°, so in 15 minutes, it moves 7.5°. So, angle between them = 90° - 7.5° = 7.5°.

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Difficulty - Medium

Total Plays - 92

Allowed Time - 10 sec

Best time - 1.230

Engineers' Day in India is celebrated on September 15 to honor which famous Indian engineer?

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Explanation:
Mokshagundam Visvesvaraya was a legendary civil engineer and Bharat Ratna awardee. His birthday, September 15, is celebrated as Engineers' Day in India.

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Difficulty - Medium

Total Plays - 95

Allowed Time - 10 sec

Best time - 1.035

CrazyEngineers was founded in which year?

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Explanation:
CrazyEngineers was founded in 2005 to bring together engineers from around the world to share ideas, projects, and innovations.

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Priya Mehta
@priyamehta • Jul 16, 2025

Jul 16, 2025
43.5K

Suggest a Laptop Suitable for Engineering Student (Budget Rs. 50000)

Hi everyone! I’m planning to buy a laptop under ₹50,000 and need some suggestions. I’m an engineering student, so my main usage will include running coding software like VS Code,...

Like 2 Replies 1
Kaustubh Katdare
@thebigk • May 9, 2026

May 9, 2026
39.5K

Sony’s New Bravia Lineup Aims for Hollywood at Home, Falls Just Short of $40K Stardom

Sony is back with a fresh Bravia lineup, and it’s aiming straight for the home theater throne. But first, a little history. Bravia, which launched in 2005, stands for "Best...

Like 2 Replies 0
shakyapreeti
@WRfRRou • Apr 2, 2026

Apr 2, 2026
128.3K

What is the best tool for software testing?

What is the best tool for software testing?

Like 4 Replies 4
Kaustubh Katdare
@thebigk • May 9, 2026

May 9, 2026
217.4K

XB-1 Rattles the Mojave: Boom’s Supersonic Flight Leaves Cactus Plants Shaken and Pilots Cheering

A mighty roar echoed through the Mojave Desert on January 28, 2025, when Boom’s XB-1 demonstrator jet shattered the sound barrier. Locals might have spilled their morning coffee as the...

Like 4 Replies 0
Vashisth Y
@NFZ9eeY • Jul 14, 2025

Jul 14, 2025
239.5K

Need a Name for Cultural Fest in Hindi, English or Sanskrit

Hello Everyone Me and my mates are going to organise a technical cum cultural fest in our college and we need a unique name for it from our names which...

Like 3 Replies 4
PRADIP CHAKRABORTY
@pradip-IwDCOf • Jan 8, 2025

Jan 8, 2025
259.7K

MECHANICAL DESIGN OF SMALL JIGS AND FIXTURES

Please share some Engineering drawings /conceptual ideas on manufacturing Jigs and fixtures

Like 2 Replies 0