Multiple-choice questions (MCQs) based on The Indian Electricity Rules, 1956: For SSC JE Electrical, RRB JE Electrical and other AE/JE/Technician Exams.
MCQ 1: Under which rule must all electric supply lines and apparatus have sufficient rating for power, insulation, and mechanical strength?
A. Rule 29
B. Rule 31
C. Rule 35
D. Rule 45
Correct Answer:
A. Rule 29
Explanation:
Rule 29 mandates that all electrical installations should be capable of handling the estimated fault current, environmental conditions, and ensure the safety of people, animals, and property.
MCQ 2: Which rule specifies that an independent cut-out must be provided for each consumer if multiple consumers are supplied through a common service line?
A. Rule 30
B. Rule 31
C. Rule 32
D. Rule 35
Correct Answer:
B. Rule 31
Explanation:
Rule 31 mandates that each consumer should have an independent cut-out at the junction point of a common service line to ensure safety and prevent electrical faults.
MCQ 3: According to Rule 33, where should the supplier provide an earthed terminal on a consumer’s premises?
A. Near the electricity meter
B. Near the main circuit breaker
C. Near the point of commencement of supply
D. At the transformer
Correct Answer:
C. Near the point of commencement of supply
Explanation:
Rule 33 states that an earthed terminal should be provided near the point where the electrical supply begins in the consumer’s premises for safety and grounding purposes.
MCQ 4: What does Rule 35 of the Indian Electricity Rules, 1956, mandate for medium, high, and extra-high voltage installations?
A. Use of insulated wiring
B. Installation of transformers
C. Display of danger notice
D. Provision of emergency power backup
Correct Answer:
C. Display of danger notice
Explanation:
Rule 35 requires that a danger notice with a skull and bones sign must be permanently affixed in a prominent position for installations of medium, high, and extra-high voltage.
MCQ 5: Under Rule 41, how should different electrical circuits be distinguished?
A. By color coding
B. By marking numbers
C. By using insulation tape
D. By placing them in separate rooms
Correct Answer:
A. By color coding
Explanation:
Rule 41 states that different electrical circuits must be distinctly identified using permanent means such as color coding to ensure safety and easy identification.
MCQ 6: Rule 44 mandates that instructions for treating electrical shock victims should be affixed in which languages?
A. English and Hindi only
B. Local language only
C. Hindi, English, and local language
D. Hindi and regional language
Correct Answer:
C. Hindi, English, and local language
Explanation:
Rule 44 requires that instructions for restoring persons suffering from electrical shock must be displayed in English, Hindi, and the local language of the district.
MCQ 7: Under Rule 45, who must follow electrical safety precautions?
A. Consumers
B. Electrical contractors
C. Workmen and suppliers
D. All of the above
Correct Answer:
D. All of the above
Explanation:
Rule 45 mandates that consumers, electrical contractors, workmen, and suppliers must take necessary precautions to ensure electrical safety during installation and maintenance.
MCQ 8: What is the maximum allowable variation in declared voltage for high voltage supply under Rule 54?
A. ±5%
B. +6% / -9%
C. ±10%
D. +9% / -6%
Correct Answer:
B. +6% / -9%
Explanation:
Rule 54 states that the voltage at the point of supply should not vary by more than +6% on the higher side or -9% on the lower side for high voltage systems.
MCQ 9: According to Rule 56, who is allowed to break the seal of an electrical meter?
A. The consumer
B. The electrical contractor
C. Only the supplier
D. The local authority
Correct Answer:
C. Only the supplier
Explanation:
Rule 56 states that only the supplier is authorized to break the seal of an electrical meter. Unauthorized tampering is punishable by law.
MCQ 10: What is the minimum vertical clearance required for high voltage lines above 11,000V passing above a building?
A. 2.5 meters
B. 3.7 meters
C. 4.6 meters
D. 5.2 meters
Correct Answer:
B. 3.7 meters
Explanation:
Rule 80 mandates a vertical clearance of at least 3.7 meters for high voltage lines passing above buildings.
MCQ 11: What is the minimum horizontal clearance required for extra-high voltage (EHV) lines above 33,000V passing near a building?
A. 1.2 meters
B. 2.0 meters
C. 2.3 meters
D. 2.0 meters + 0.3 meters per 33,000V
Correct Answer:
D. 2.0 meters + 0.3 meters per 33,000V
Explanation:
Rule 80 specifies that the horizontal clearance for EHV lines should be at least 2.0 meters plus an additional 0.3 meters for every 33,000V.
MCQ 12: What is the penalty for breaking an electricity meter seal under Rule 138?
A. ₹50
B. ₹100
C. ₹200
D. ₹500
Correct Answer:
C. ₹200
Explanation:
Rule 138 states that breaking the seal of an electricity meter can lead to a fine of up to ₹200, and if the consumer is unaware, they may be fined up to ₹50.
MCQ 13: Which rule states that electrical accidents must be reported within 24 hours to the Inspector?
A. Rule 33
B. Rule 44A
C. Rule 55
D. Rule 77
Correct Answer:
B. Rule 44A
Explanation:
Rule 44A mandates that any accident involving electricity that results in injury or death must be reported to the Inspector within 24 hours.
MCQ 14: What is the minimum clearance for low voltage overhead lines erected across a street?
A. 3.5 meters
B. 4.6 meters
C. 5.8 meters
D. 6.1 meters
Correct Answer:
C. 5.8 meters
Explanation:
Rule 77 specifies that the minimum clearance for low and medium voltage lines crossing a street should be at least 5.8 meters.
MCQ 15: According to Rule 76, what is the minimum factor of safety for hand-molded concrete supports?
A. 1.5
B. 2.0
C. 2.5
D. 3.0
Correct Answer:
C. 2.5
Explanation:
Rule 76 states that the minimum factor of safety for hand-molded concrete supports must be 2.5 to ensure structural integrity.