Take Test: EMC 4003 Test 2- Requires Respondus Description Instructions Timed Te

Question

Take Test: EMC 4003 Test 2- Requires Respondus Description Instructions Timed Test This test has a time limit of 1 hour and 40 minutes.This test will save and subm Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds re Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed at any polint until time has expired. The tim Remaining Time: 1 hour, 03 minutes, 58 seconds Question Completion Status: 1011 12 Moving to another question will save this response Question 6 As steam flows through a multi stage rotating turbine blades O Velocity decreases but pressure remains constant O Both velocity and pressure decrease O Velocity increases but pressure remains constant OBoth velocity and pressure increase

Explanation / Answer

Both velocity and pressure decreases

Solution- Rotating turbines comprises of two parts -rotor and stator. In rotor ,the kinetic energy of steam is utilised and its momentum is imparted on blades, thus kinetic energy decreased and so velocity decreases.

In stator, velocity increases as steam passes through converging passages where pressure reduces and velocity increases.

Overall effect is velocity and pressure both decreases.

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