Question
How is thermal efficiency different in diesel and petrol
engines?Solution
Diesel engines typically have higher thermal efficiency (32-38%) compared to petrol engines (25-32%).
A train completes a journey in 5 hrs with a speed of 50 km/hr. At what speed must it travel to complete the journey in 5 hrs?
Two cyclists, ‘P’ and ‘Q’, started from locations ‘L’ and ‘R’ towards each other at the same time. When they met after 4 hours, cyclist ...
If a car runs at 30 km/hr, it reaches its destination late by 17 minutes but if runs at 45 km/hr it is late by 9 minutes. What is the correct time for t...
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In a 900 meter marathon, if Akhil beats Suraj by 150 meters and Suraj beats Puneet by 300 meters, then find the distance by which Akhil beats ‘C’.
A man running with the speed of 58 km/hr covers a certain distance in ‘x’ hours. If the same distance can be travelled with a speed of 62 km/h in (x...
Pratham is traveling from Delhi to Banthara, a distance of 382 km. She starts her journey from Delhi at a speed of 120 km/h, and her speed decreases by ...
A man travelled a total distance of 150 km. He travelled first 100 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 10 ...
