Switch Gear And Protection

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Q1:- When fault occur on a system

1. voltage of 3- phase become balance
2. voltage of 3- phase become unbalance
3. voltage of 3- phase first balance and then unbalance 
4. none of the above 

ANSWER:- 2

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Q2:-The voltage of short transmission line is

1.       20 kv or less

2.       40 kv or above

3.       110 kv or less

4.       66 kv or above

ANSWER:-1

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Q3:-The length of medium transmission line is lying between

1.       50 km to 150 km

2.       150 km to 200 km

3.       100 km to 200 km

4.       Above 100 km

ANSWER:-1

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Q4:-The voltage of medium transmission line is lying is

1.       100kv to 220 kv

2.       220 kv to 660 kv

3.       22 kv to 100 kv

4.       None of the above

ANSWER:-3

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Q5:-The length of long transmission line is

1.       More than 200 km

2.       More than 100 km

3.       More than 150 km

4.       More than 220km

ANSWER:-3

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