Engineering, 05.12.2019 01:31 sbudlove2838
Consider three different processors p1, p2, and p3 executing the same instruction set. p1 has a 3 ghz clock rate and a cpi of 1.5; p2 has a 2.5 ghz clock rate and a cpi of 1.0; p3 has a 4.0 ghz clock rate and has a cpi of 2.2: a) which processor has the highest performance expressed in instructions per second? b) if the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. c) we are trying to reduce the execution time by 30% but this leads to an increase of 20% in the cpi. what clock rate should we have to get this time reduction?
Answers: 3
Engineering, 04.07.2019 19:20
The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal
Answers: 3
Engineering, 06.07.2019 03:10
Asolid steel sphere (k=63.9 w m-1 k-1 , ? =7832 kg m-3 , c=0.523 kj kg-1 k-1 ), 100 mm in diameter is initially at a uniform temperature of 500o c and is suddenly quenched in a large oil bath for which t? = 100o c and h = 3200 w m-2 k-1. estimate the time required for the sphere to cool to 200o c and to 110o c
Answers: 1
Engineering, 06.07.2019 03:20
Avertical steel rod of length 2.0 m and diameter 25 mm is rigidly fixed at its upper end and has a flange at its lower, free, end. what will be the maximum stress produced in the rod when a load of 20 kn is applied, (a) gradually to the lower end, (b) suddenly to the lower end, (c) by a collar falling from a height of 50 mm on to the flange?
Answers: 3
Engineering, 06.07.2019 05:10
Asteam turbine is supplied with steam at 28bar and 425c. a fraction of the steam is extracted at 1.2bar to heat the feed water in one open feed water heater. the rest of the steam expands in the low pressure stage of the turbine to 0.08bar. a)-sketch the regenerative rankine cycle with open feed water heater on the t-s diagram. b)-assuming isentropic expansion in both stages of the turbine, find the cycle efficiency. do not assume negligible pump work.
Answers: 1
Consider three different processors p1, p2, and p3 executing the same instruction set. p1 has a 3 gh...
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