Consider the following statements in respect of impulse steam turbines
1. Blade passages are of constant crosssectional area.
2. Partial admission of steam is permissible.
3. Axial thrust is only due to change in flow velocity of steam at inlet and outlet of moving blade.
Which of the statements given above are correct?
a. 1, 2 and 3 b. Only 1 and 2
c. Only 2 and 3 d. Only 1 and 3