Practice Test: Question Set - 04
1. Overhead lines generally use
- (A) Copper conductors
- (B) All aluminium conductors
- (C) A.C.S.R. conductors
- (D) None of these
2. As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only
- (A) 31.25 percent of copper
- (B) 33.3 percent of copper
- (C) 66.7 percent of copper
- (D) 125 percent of copper
3. The steel used in steel cored conductors is usually
- (A) Alloy steel
- (B) Stainless steel
- (C) Mild steel
- (D) High speed steel
4. By which of the following a bus-bar is rated?
- (A) Current only
- (B) Current and voltage
- (C) Current, voltage and frequency
- (D) Current, voltage, frequency and short time
current
5. Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?
- (A) Static condenser
- (B) Synchronous condenser
- (C) Tap changing transformer
- (D) Booster transformer
6. Series capacitors on transmission lines are of little use when the load VAR requirement is
- (A) Large
- (B) Small
- (C) Fluctuating
- (D) Any of the above
7. The underground system cannot be operated above
- (A) 440 V
- (B) 11 V
- (C) 33 V
- (D) 66 V
8. 310 km line is considered as
- (A) A long line
- (B) A medium line
- (C) A short line
- (D) Any of the above
9. The distributors for residential areas are
- (A) Single phase
- (B) Three-phase three wire
- (C) Three-phase four wire
- (D) None of the above
10. Which of the following is usually not the generating voltage?
- (A) 6.6 kV
- (B) 8.8 kV
- (C) 11 kV
- (D) 13.2 kV
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