NPTEL Smart Grid Basics to Advanced Technologies Week 6 Assignment Answers 2024
1. IDMT characteristics are:
- t = (0.14/((M^0.01) -1 ) )* TDS
- t = (0.14/((M^0.01) +1 ))* TDS
- t = (0.14/((M^0.02) -1 )) * TDS
- t = (0.14/((M^0.02) + 1)) * TDS
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2. The lower and upper limits for the TDS are set to _________ and ___________ respectively.
- 0.05 and 1
- 0.05 and 1.05
- 0.5 and 1
- 0 and 1
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3. What is the main advantage of using adaptive protection schemes in the context of smart grids?
- They are more cost-effective than conventional schemes.
- They are not dependent on current information.
- They work well with fixed mode operation.
- They can handle the fluctuating nature of renewable sources and changing fault conditions.
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4. For which of the conditions would the decision not be +1?
- Power flow direction: Upstream, Fault point: Forward, Δφ2 or Δφ1: Negative
- Power flow direction: Upstream, Fault point: Reverse, Δφ2 or Δφ1: Positive
- Power flow direction: Downstream, Fault point: Forward, Δφ2 or Δφ1: Positive
- None of these
Answer :-
5. Which of the following states the DC grid’s importance over the AC grid? I. Relatively easier frequency and VAr control II. Absence of reactive power control III. Reduced power congestion IV. Reduced system losses
- I, II, and III
- II, III, and IV
- I, III, and IV
- I, II, and IV
Answer :-
6. Variable speed drives loads are the ____________ type of loads.
- Constant current
- Constant impedance
- Constant Power
- ZIP load
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7. The energy storage level of a super-capacitor is represented by _________
- Charging current
- VA
- Redox-flow
- Terminal voltage
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8. What are the key deciding features of a Battery Storage System?
- Charging and discharging time
- Minimum no. of storage cycles
- Minimum storage period
- All of the above
Answer :-
9. The capacity of a battery is measured in ____________
- kWh
- Ah
- VAh
- None of the above
Answer :-
10. The anode catalyst usually made up of
- Fine silver powder
- Fine platinum powder
- Fine gold powder
- None of these
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