Water at 20°c flows through a new cast iron pipe of 150 mm diameter at a velocity of 2 m/s. what is the power loss over a 400 m length of pipe ?

Fluids at rest possess no flow energy. a)- true b)- false

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.