Consider two designs for the 5-stage pipelined architecture. In the first design, the branch condition and target are resolved in the MEM stage, while in the second design, the branch condition and target are resolved in the ID stage, but the clock cycle time is 10% larger than in the first design. Assuming that I. the instruction mix executing on the pipeline contains 25% branch instructions, 70% of which are taken. II. the CPI of both designs is 1.5 if we do not account for stalling due to control hazards. a. Compute the CPI for each of the two designs when the effect of control hazards is accounted for. b. Specify which of the two designs would be more efficient.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite