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Question 1
According to Ohm's Law, what is the electric current (I) flowing through a heating element with a resistance of 44 ohms when connected to a 220 V AC supply?
Correct Answer:
5.0 A
Question 2
A single-phase step-down transformer has 1,200 turns in the primary winding and 120 turns in the secondary winding. If the primary voltage is 240 V, what is the secondary output voltage?
Correct Answer:
24 V
Question 3
What is the standard frequency of the single-phase alternating current (AC) domestic power supply distributed in Bangladesh by BPDB/DESCO?
Correct Answer:
50 Hz
Question 4
What is the primary safety function of connecting equipment earthing (grounding) to the metallic frame of domestic and workshop appliances?
Correct Answer:
To provide a low-resistance return path to ground that triggers protective circuit breakers during insulation faults
Question 5
Which electrical protective device is specifically engineered to detect minute earth leakage currents (e.g., 30 mA) and rapidly trip to protect humans from fatal electrocution?
Correct Answer:
Residual Current Circuit Breaker (RCCB / ELCB)
Question 1
Exam overview

About this Exam

Prepare with the BTEB SSC Vocational Practice Questions - Bangladesh Technical Education Board Secondary School Certificate (SSC) Vocational Examination Exam practice quiz. This question bank includes 100 questions covering standard, primary, fire, metal, and welding. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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BTEB SSC Vocational Practice Questions - Bangladesh Technical Education Board Secondary School Certificate (SSC) Vocational Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on standard, primary, fire, metal, and welding. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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