126. The undershot water wheels are those in which
127. A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used ?
128. Which of the following pump is suitable for small discharge and high heads?
129. The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.
130. The specific speed of a centrifugal pump may be defined as the speed of an imaginary pump, identical with the given pump, which will discharge one litre of water, while it is being raised through a head of one metre.
131. In an outward flow reaction turbine
132. A hydraulic press is a device used
133. The flow ratio in case of Francis turbine varies from
134. Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?
135. Which day is observed as Commenwealth Day?
136. The function of guide vanes in a reaction turbine is to
137. Which of the following statement is correct ?
138. If the ratio of corresponding velocities at corresponding points are equal, then the model and the prototype are said to have dynamic similarity.
139. The jet ratio is defined as the ratio of the
140. Mechanical efficiency of a centrifugal pump is the ratio of
141. The cavitation in a hydraulic machine is mainly due to
142. A person can apply for the Citizenship India after staying in India for a minimum period of...........?
143. In a centrifugal pump, the regulating valve is provided on the
144. A Francis turbine is an outward flow reaction turbine.
145. Open the door, .........?
146. The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
147. The runaway speed of a hydraulic turbine is the speed
148. The cavitation in a hydraulic machine
149. The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is
150. If the net positive suction head (NPSH) requirement for the pump is not satisfied, then