Answer / Santoh Kumar

Calibration or testing of a Low Voltage (LV) Air Circuit Breaker involves several steps, including the following: 1) Disconnect the circuit breaker from its electrical source and ground it safely. 2) Follow the manufacturer's instructions for specific models regarding test setup, voltage levels, and sequence. 3) Use appropriate testing equipment to apply the required voltage and current levels while monitoring the circuit breaker's performance. 4) Verify that the circuit breaker trips and resets correctly at the specified settings. 5) Document the results and compare them with the manufacturer's specifications.

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

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iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]

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Hi I'm doing my MBA(3rd semester).I applied for the post of ET conducted by BHEL the last year.I cleared the written and lost in personal interview.Again I wrote the exam this time and cleared the written n yet to take the personal interview.Shall I disclose in the interview about my studies.What shall i say if they ask about my change from studies to job

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