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Questions and Answers
What is the purpose of the Commutator Handle in a double line block instrument?
What is the purpose of the Commutator Handle in a double line block instrument?
- To supply power to the block instrument
- To operate the block instrument (correct)
- To control the conditional TOL locking
- To connect the block instrument to the railway line
What is the frequency of periodical overhauling required for double line block instruments?
What is the frequency of periodical overhauling required for double line block instruments?
- Once in 5 years
- Once in 10 years
- Once in 3 years
- Once in 7 years (correct)
What is the current rating for the line current used in double line block instruments?
What is the current rating for the line current used in double line block instruments?
- 30mA
- 25mA (correct)
- 35mA
- 20mA
How often is simple regular maintenance required for double line block instruments?
How often is simple regular maintenance required for double line block instruments?
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What type of block instrument is suitable for both Non-RE and RE sections?
What type of block instrument is suitable for both Non-RE and RE sections?
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