Question
Pipes A and B can fill a tank in 43.2 minutes and 108
minutes, respectively. Pipe C can empty it at 3 litres/minute. When all the three pipes are opened together, they fill the tank in 54 minutes. The capacity (in litres) of the tank is:Solution
LCM of 43.2, 108 and 54 = 432 units = Total work Efficiency of A = 432/43.2 = 10 units/min Efficiency of B = 432/108 = 4 units/min Efficiency of (A + B + C) = 432/54 = 8 units/min Efficiency of C = (10 + 4 – 8) units/min ⇒ 6 units/min Capacity of tank = (432/6) × 3 litres ⇒ (72 × 3) litres ⇒ 216 litres
What is the main function of a chaff cutter in livestock farming?
The land-related reform enacted to protect tenants from eviction and secure their right to cultivate the land is known as:
Chlorine is associated to photosynthesis in production of:
Which of the following statements is/are true?
Statement A: Soil aggregation is promoted by the presence of soil microorganisms.
Statement...
Which method is NOT used for rapid virus detection?
To break the dormancy of seed, a process of scratching, or mechanically altering the seed coat to make it permeable to water and gases is done. It is kn...
Which of the following is a floating weed?
An area of 0.6 ha each of wheat and maize is irrigated daily with a discharge of 2000 litre per minute for a period of 15 hours. Each crop receives 8 cm...
Who is regarded as the father of Indian Green Revolution?
Sunflower is an ..................?
