1. Tell us why Are You Interested in This Particular Type of Work?
Depending on the type of job you are interviewing for (industrial, residential or commercial), you might be asked why you are interested in that aspect of the field and not others. Be prepared to explain why you are seeking the particular type of position the interview is for.
2. Tell us what are the advantages of star-delta starter with induction motor?
(1). The main advantage of using the star delta starter is reduction of current during the starting of the motor.Starting current is reduced to 3-4 times Of current of Direct online starting.
(2). Hence the starting current is reduced , the voltage drops during the starting of motor in systems are reduced.
3. Suppose if one lamp connects between two phases it will glow or not?
If the voltage between the two phase is equal to the lamp voltage then the lamp will glow. When the voltage difference is big it will damage the lamp and when the difference is smaller the lamp will glow depending on the type of lamp.
4. Tell us what is Automatic Voltage regulator(AVR)?
AVR is an abbreviation for Automatic Voltage Regulator. It is important part in Synchronous Generators, it controls theoutput voltage of the generator by controlling its excitation current. Thus it can control the output Reactive Power of the Generator.
5. Do you know operation carried out in Thermal power stations?
The water is obtained in the boiler and the coal is burnt so that steam is obtained this steam is allowed to hit the turbine , the turbine which is coupled with the generator generates the electricity.
6. Tell us why Are You Interested in the Electrical Trade?
If you are new to the electrical trade or are applying for an apprenticeship, you will probably be asked this question. Employers ask this question because they want to hear about your motivations and goals so that can be sure that you really have an interest in the field.
7. Please explain what is the difference between MCB & MCCB, Where it can be used?
MCB is miniature circuit breaker which is thermal operated and use for short circuit protection in small current rating circuit. MCCB moulded case circuit breaker and is thermal operated for over load current and magnetic operation for instant trip in short circuit condition.under voltage and under frequency may be inbuilt. Normally it is used where normal current is more than 100A.
8. Explain me what will happen if DC supply is given on the primary of a transformer?
Mainly transformer has high inductance and low resistance.In case of DC supply there is no inductance ,only resistance will act in the electrical circuit. So high electrical current will flow through primary side of the transformer.So for this reason coil and insulation will burn out.
9. What Are Your Salary Expectations as Electric Mechanic?
Be prepared to quote a realistic salary expectation for the position that you are applying for. Use your knowledge about the profession and the company to make a request that meets your needs while also being reasonable.
10. Tell us what Qualifies You to Work as an Electrician?
Employers will want to know if you have the right skills and credentials to work as a professional electrician. Mention any relevant certifications, licenses and education, as well as any experience from previous jobs that specifically pertain to an electrician's job.