Question
Download Solution PDFWhich of the following alternatives will be cheaper?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:-
3-phase motors are better than single-phase motor because of the following reasons:-
- A single-phase motor draws significantly more current than the equivalent 3-phase motor.
- Voltage in 3-phase supply is 1.5 times higher than single-phase supply.
- Only about 75% as much copper wire is required for distributes 3-Phase power as it is required for distributing the same amount of Single-phase power.
- Smaller conductors can be used in 3-phase power supplies and therefore it makes it 3-phase more efficient at supplying power to large electrical machines.
Therefore three-phase motor is more compact and less costly than a single-phase motor of the same voltage and rating (above 10 HP) as a single-phase AC motor.
Last updated on May 9, 2025
-> PGCIL Diploma Trainee result 2025 will be released in the third week of May.
-> The PGCIL Diploma Trainee Answer key 2025 has been released on 12th April. Candidates can raise objection from 12 April to 14 April 2025.
-> The PGCIL DT Exam was conducted on 11 April 2025.
-> Candidates had applied online from 21st October 2024 to 19th November 2024.
-> A total of 666 vacancies have been released.
-> Candidates between 18 -27 years of age, with a diploma in the concerned stream are eligible.
-> Attempt PGCIL Diploma Trainee Previous Year Papers for good preparation.