In the power flow at the slack (reference) bus. P and V are fixed P and Q are fi

Question

In the power flow at the slack (reference) bus. P and V are fixed P and Q are fixed V and Q are fixed None of the above Photovoltaic (PV) systems convert int0 electricity thermal energy mechanical energy photon energy kinetic energy According to Betz's law, no wind turbine system can convert more than 16/27 (59.3%) of the kinetic energy in wind into the electrical energy True False For a simple Photovoltaic (PV) cell electrical model, is ot the solar radiation to which the PV cell it exposed short-circuit current open-circuit voltage Inversely proportional proportional

Explanation / Answer

1. Option d is the answer

The slack bus has to adjust for loads by emitting or absorbing real and reactive powers. Hence P which stands for real power cannot be a fixed one and also Q which stands for reactive power cannot be fixed which means that neither P nor Q are fixed hence option d is the correct. The voltage magnitude is also not fixed.

2. Answer is option c since photovoltaic cell converts light energy into electricity. Light is made up of photons which internally means that it converts photon energy into electical energy.

3. The answer is true. The Betz's law states that statement exactly.

4. In a simple photovoltaic cell short circuit current is proportional to the solar radiation to which photovoltaic cell is exposed.

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