Last seen: Jul 17, 2023
To obtain water for making steam for turning turbines and for cooling spent steam to condense it back into hot water for making fresh steam.
Simple alternator: Magnet fixed and coil rotates; Practical alternator: Coil fixed and magnet rotates.
This phenomena is known as electromagnetic induction.
Function of brushes is to transfer the current from coil to load.
If we replace the slip rings of an AC generator by a commutator, then it will become a DC generator.
Frequency is the number of students having the same blood group. The frequency is represented in the table or the frequency distribution table: Bloo...
Five examples from day-to-day life: Number of students in our class. Number of fans in our school. Electricity bills of our house for last two y...
Let the diameter of the sphere be “d”. Radius of sphere, r1 = New radius of sphere, say r2 = x = Curved surface area of sphere, (CSA)1 ...
Diameter of wooden sphere = 21 cm Radius of wooden sphere, r = diameter/ 2 = (21/2) cm = 10.5 cm Surface area of wooden sphere = 4πr2 = 4 × (...
External dimensions of book self, Length, l = 85cm Breadth, b = 25 cm Height, h = 110 cm External surface area of shelf while leaving out the ...
Diameter of capsule = 3.5 mm Radius of capsule, say r = diameter/ 2 = mm = 1.75 mm Volume of spherical capsule = πr3 Volume of spherical...
Volume of the solid sphere = πr3 Volume of twenty seven solid sphere = 27 × πr3 = 36 π r3 (i) New solid iron sphere radius = r’ Volume of thi...
(i) Cost of white-washing the dome from inside = Rs 4989.60 Cost of white-washing 1 m2 area = Rs 20 CSA of the inner side of dome = m2 = 249.48...
Correct answer: (4) double fertilisation
(2) physiologically differentiated sex organs
Correct option: (4) Fern and Funaria
Correct option: (2) Ginkgo, Pisum
Correct option: (1) spores are formed