Which material is commonly used as a fire-resistant insulation in building construction? A) Fiberglass B) PVC C) Plywood D) Aluminum
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- The resistances of potential transformer winding is minimized by using a thick conductors and small length of turns b thin conductors and small length of turns c thin conductors and large length of turns d thick conductors and large length of turnsCommercially available PV panels today have efficiencies closest to about : A_20% B_50% C_1% D90%Compare dielectric properties of oil with solid Insulators and liquid Insulators. Compare dielectric strength of transformer oil, and solid dielectrics, gas dielectrics.
- Two ideal CTs with turns ratios of 300 : 5 and 600 : 5 are connected as shown in Figure 3.6a and b. If the primary current is 3000A and the burden is 1 ohm, what are the voltages at the secondary terminals of the CTs in the two cases? Please answer in typing format pleaseDiscuss causes of insulation failures in high voltage engineering. High voltage engineeringSome power devices have bidirectional current capability Select one: O a. True b. False The voltage regulation of the transformer will depend on the load Select one: O a. For mainly inductive or resistive load, the voltage regulation is negative O b. For mainly capacitive, inductive or resistive load, the regulation is positive Oc. For mainly capacitive load, voltage regulation is positive and other loads it is negative. O d. For mainly capacitive load, voltage regulation is negative.
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- Grounding methods in Power systemsThe property of insulating material which makes the breakdown voltage high in a cable is ...... Good Mechanical strength O High conductivity O High dielectric strength O High insulation resistanceQ3-A)- Indicate whether the following statements are true or false and correct the false statements 4. The full-load copper loss and iron loss of transformer are 800w and 600w respectively, the copper loss and iron loss at half load will be 400w and 300w respectively 5- The imaginary component of no load current for transformer is responsible for the consumption of iron loss