What are some expectations to be a robotics engineer?

Why the entire frequency range of 20hz-20khz is not used in telephony? What are the prosses of making plastic? What do you understand by the term fully restored logic and explain this in the context of working of an inverter? What year was condoms invented? Name the two organelles in a plant cell that contains their own genetic material and ribosomes? What would cause a sewer smell from sinks and toilets when water is running? Machines to make light emitting diodes? What is design current? Voltage sources are used to sustain? What does asp stand for in asp weapon? When did STD dialling for telephone numbers start in the UK? Which company logo has a blue triangle with two white crescent insets? What does a circled c on a painting mean? What is the synonym for obstacle? How do you design Power supply for 0-30V and 2A? Does copper loose electrical conductivities when heated? There are many high level languages What is the significance of another language C plus plus? What are the pros and cons of the desalinization process? What is the effect of one coil on another? Advantages of mining uranium?