ISRO 2023 Quiz 36 Revision

A series ¡s given with one term missing. Select the correct alternative from the given ones that will complete the series.

RSK, TVM, VYO, XBQ,?

For a regenerative Rankine cycle, T-S plot is given. Steam at rate 1kg/s is entering the turbine. At an intermediate stage (pressure P₂) m₁ kg/s steam is extracted by open feed water heater 1. At another intermediate stage (pressure P₃) m₂ kg/s steam is extracted by open feed water heater 2. Which of the following energy balance equation is INCORRECT?

For a Rankine cycle with reheating, which of the following statements are correct?

I. Thermal efficiency will decrease

II. Average temperature of heat addition will increase

III. Steam at turbine exit becomes drier

A closed coil helical spring with mean coil diameter of 60 mm is made using a wire of diameter 6 mm. If the torsional strength is 120 MPa and the coil has 14 active turns, then the Wahl’s correction factor is,