In its simplest form, ____ completes a path through which fault current can flow. Select one: A. GROUNDING B. SHUNTING C. BONDING D. BENDING

5.a. The aging of transformer insulationA. increases as the temperature increases.B. does not affect the transformer life.C. is not affected by the temperature.D. decreases as the temperature increases.5.b. Excessive power-transformer noise at the start of operation is most likely caused byA. an open feeder switch.B. a loose brace.C. a defective radiator.D. an open load fuse.

There are two images, please answer parts a, b, and c and label them.

2. What type of potential transformer would you use for a 362-kV grounded-neutral metering application on an interconnection system? A. Bar-type B. Cascade-type C. Window-type D. Phase-shift-type

Why are single-phase distribution transformers made whit the low-voltage winding in two sections? A- to make two voltages available on the secondary side, B- to minimize losses, C- to provide a spare, D- none The neutral conductor on the secondary side of a single-phase 3-wire distribution transforme carries the____. A- total load current of both outside conductors. B- product of currents in both of  the outside conductors, C- difference in the currents between both the outside conductors, D- none The primary purpose of a control transformer is to reduce the line ...... A- current to the value needed to operate control circuits, B- wattage to the value needed to operate control circuits, C-voltage to the value needed to operate control circuits, D- none

Why are circuit breakers and fuses ineffective in protecting against transient over voltage due to lighting and switching surges?

Q2 (1). In Figure 2-1, two curves represent fault currents supplied by two sources in case of phase faults at different corresponding locations. Overcurrent protection 1 and 2 are designed to protect line A- B. If there is no directional element, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? (2). If only one directional element is available, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? A B K1 IK1 g K2 Figure 2-1 IK2

Explain the concept of fault tolerance in redundant systems and its benefits.