Question
What principle/law explains the working of the hydraulic
brakes in automobiles?Solution
Hydraulic brakes work on the principle of Pascal's law which states that "pressure at a point in a fluid is equal in all directions in space". According to this law when pressure is applied on a fluid it travels equally in all directions so that uniform braking action is applied on all four wheels. The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling unit, which is usually near the operator of the vehicle, to the actual brake mechanism, which is usually at or near the wheel of the vehicle.
X men can complete the piece of work in 50 days and (X + 51) men can complete the same work in 30 days less than that of days taken by X men. Find the v...
- Priya can solve 30 questions in 1.5 hours. If she decreased her efficiency by 25%, then how much time would she take to solve the same number of questions?
15 men can complete a piece of work in 5 days, while 20 women can complete it in 5 days. 8 men start working on the job & after working for 3 days, ...
Sonal completed 30% of work alone and left the remaining work for Vinod who completed it in 28 days. If the total work got completed in 40 days, then fi...
Aman and Bheema together can finish 50% of a task in 12 days, while Chinky alone can finish 30% of the same task in 12 days. Dete...
A team leader can do a job as fast as three members of the team working together. If one of the members can do the job in 5 hrs, the second one takes 10...
50 men can complete a piece of work in 15 days. 10 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the r...
Virat can do a piece of work in 30 days and Sachin can do the same work in 45 days. If Virat works for 5 days and got Rs. 2100, and the remaining work w...
The time taken by ‘A’ to build a wall alone is 40% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percen...
A and B together can do a piece of work in (p-8.8) days.The efficiency of D is 10% less than the efficiency of B. A and C together can do the same piece...
Relevant for Exams:
