If a rotor in a power generator completes 3000 rotations in a minute.
Which type of AC is produced here , single phase or three phase ?

In single phase generators armature functions as rotor whereas in power generators armature functions as stator List out the other differences between single phase and three phase generators ?

Which is used as rotor in the power generators ?

In single phase generators armature functions as rotor whereas in power generators armature functions as stator What are the advantages of using armature as stator in power generators ?

Maximum voltage produced in an AC generator completing 60 cycles in 30 seconds is 250 V. What is the period of the armature ?

Read the following statements and find out the incorrect statements. a. Asexual reproduction is common among single celled organisms, and in plants and animals with relatively complex organisations. b. In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into new yeast organism (cells). c. Vegetative reproduction is also a type of asexual reproduction. d. While in animals and other simple organisms the term vegetative reproduction is used unambiguously, in plants, the term asexual reproduction is frequently used. e. Water hyacinth is also called 'Terror of Bengal.'

a. What are the three clear cut phases in the life of annual and biennial type of plants? b. Why is it difficult to define these phases in perennial species of plants?