by Maryam Hussain How the working of a theoretical engine was proposed? The theoretical heat engine was proposed by Sadi Carnot in 1824 . Heat engines are devices that can convert heat into mechanical energy. Like a Steam engine or Motor vehicle, the working principle of all heat engines is the same in which any working substance gas or vapor is brought back to the initial stage by going through different thermodynamic stages of a cyclic process . Carnot suggested that, if a heat engine goes through fixed thermodynamic stages of a specified process, then the efficiency of the heat engine may be 100% possible. Ideally, this engine gives maximum efficiency. No other engine can be more efficient than this. The specified cyclic process suggested by Carnot is called the Carnot cycle. The Carnot engine has four main parts: 1). First, an insulated, non-conducting stand , so that the transfer of energy is not possible . 2). Second, a hot reservoir with infi...
by Maryam Hussain How much salary should you demand? While you are undergoing a job interview, the employer may bring up the salary and benefits issues earlier, but you should avoid asking benefits-related questions until you are offered the job. The right time of discussing salary and benefits comes after you have been offered. Of course, if the employer raises these issues, you may ask questions in response to what the employer has raised, but even then avoid letting this area become the all-consuming focus of discussion prior to the job offer. Once the job has been offered to you, you should start asking benefits-related questions; if the topic of salary and benefits has not been discussed earlier, you should start the topic by asking about the salary range for the position. Try to talk in terms of a range rather than a single salary figure. Discussing a range will give greater flexibility for some negotiations. Usually, there is room for some negotiation i...