Questions

If for a short period of time circuits goes to some different logic level then it is spposed to have then it is called static hazard. e.g., If the final logic value of output of given circuit becomes one vent if if is supposed to be zero then it is called static-0 Hazard and vice versa. Dynamic Hazard is the one in which the circuit output goes to some other logic level more than once then finally settling down to some appropriate level.

Black  surfaces are good emitters of heat ( They are also good absorbers of heat). If the black surface is rough too, the emitting will be better. So (b) is the correct answer. Shining surfaces reflect back radiation. So if the black surface is also shining the effectiveness of emitting heat is lessened.

Robert Watson Watt

A given quantity of finished goods requires a given quantity of raw materials and components to make them. Materials requirement planning systems to make them. Materials requirements planning systems are computerized tools that manage when materials must be ordered to supply production at a later date. MRP is effective when output quantities are known.Small business owners are often their own MRP systems,storing the information needed to supply prodution in their knowledge and experience. Activities such as computer tracking inventory and forecasting demand are MRP activities.

 Trotsky