1. Why is a combined cycle system important? Describe such a system that uses a gas turbine generator. Define its advantages and disadvantages. Why is the addition of a steam cycle so important to the...

1. Why is a combined cycle system important? Describe such a system that uses a gas turbine generator. Define its advantages and disadvantages. Why is the addition of a steam cycle so important to the gas turbine cycle?2.I n a nuclear power plant, briefly describe the fission process that releases heat for the generation of steam. What is a moderator and what substance is commonly used?