1. ACSR conductor have
- all conductors made of aluminium
- outer conductors made of aluminium
- inner conductor made of aluminium
- core made of aluminium
Answer: 2
2. If the frequency of a transmission system is changed from 50 Hz to 100 Hz, the string efficiency, will
- increase
- decrease
- remain unchanged
- may increase or decrease
Answer: 3
3. If the length of a transmission line is increased its capacitance will
- increase
- decrease
- remain same
- increase or decrease
Answer: 1
4. The line parameters are (a) Shunt reactance (b) Series reactance (c) Conductance (d) Resistance
- a and b
- a and c
- b,c and d
- a,b,c and d
Answer: 4
5. The skin effect does not depends on,
- nature of material
- size of wire
- supply frequency
- temperature
Answer: 4
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6. For OH transmission line, the self GMD method is used to find
- Capacitance
- Inductance
- Both
- None
Answer: 4
7. ACSR conductor have the central core made of
- Copper
- Steel
- Aluminium
- Cadmium
Answer: 2
8. Which of the following conductor spirality effect is ignored
- Magnetic
- Non-magnetic
- Both
- None
Answer: 2
9. Highest transmission voltage in India
- 400 KV
- 450 KV
- 500 KV
- 750 KV
Answer: 4
10. If the height of transmission tower is increased,
- line capacitance increases and line inductance decreases
- line capacitance decreases and line inductance increases
- line capacitance remain same and line inductance decreases
- line capacitance decreases and line inductance remain same
Answer: 4
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