Confidence Group interview questions

I applied for the position through BDJobs and was shortlisted after one month. Later, I received an email and a phone call from the company informing me about my selection and inviting me to attend an in-person interview at their office for further evaluation.

At first they will take a written exam based on english, aptitude test, critical thinking and technical part. Then they will take an interview asking different power plant machineries related questions.