Question: A 250-V, 4-pole, wave-wound d.c. series motor has 782 conductors on itsarmature. It has armature and series field resistance of 0.75 ohm. The motor takesa current of 40 A. Estimate its speed and gross torque developed if it has a flux per pole of 25 mWb Answer: Step 1 Mechanical Engineering homework question answer, step 1, image 1 Mechanical Engineering homework question answer, step 1, image 2 Step 2 Mechanical Engineering homework question answer, step 2, image 1 Step 3 Mechanical Engineering homework question answer, step 3, image 1

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Question:

The following processes are being scheduled using a preemptive, roundrobin
scheduling algorithm. Each process is assigned a numerical priority, with a higher
number indicating a higher relative priority. In addition to the processes listed
below, the system also has an idle task (which consumes no CPU resources and is
identified as Pidle ). This task has priority 0 and is scheduled whenever the system
has no other available processes to run. The length of a time quantum is 10 units. If
a process is preempted by a higher-priority process, the preempted process is
placed at the end of the queue.
a. Show the scheduling order of the processes using a Gantt chart.
b. What is the turnaround time for each process??

The following processes are being scheduled using a preemptive, roundrobinscheduling algorithm. Each process is assigned a numerical priority, with a highernumber indicating a higher relative priority. In addition to the processes listedbelow, the system also has an idle task (which consumes no CPU resources and isidentified as Pidle ). This task has priority 0 and is scheduled whenever the systemhas no other available processes to run. The length of a time quantum is 10 units. Ifa process is preempted by a higher-priority process, the preempted process isplaced at the end of the queue.a. Show the scheduling order of the processes using a Gantt chart.b. What is the turnaround time for each process??

Step 1

Given:

The following processes are being scheduled using a preemptive, roundrobin
scheduling algorithm. Each process is assigned a numerical priority, with a higher
number indicating a higher relative priority. In addition to the processes listed
below, the system also has an idle task (which consumes no CPU resources and is
identified as Pidle ). This task has priority 0 and is scheduled whenever the system
has no other available processes to run. The length of a time quantum is 10 units. If
a process is preempted by a higher-priority process, the preempted process is
placed at the end of the queue.
a. Show the scheduling order of the processes using a Gantt chart.
b. What is the turnaround time for each process??

 

 

Step 2

Answer:

a. Show the scheduling order of the processes using a Gantt chart.

p1

p2

pidle

p2

p3

p2

p3

p4

p2

p3

pidle

p5

p6

p5

0          10            20          25         35            45          55     60             75           80         90         100 105 115  120
b. What is the turnaround time for each process??

 p1: 20-0 -20, p2: 80-25 = 55, p3: 90-30 = 60, p4: 75-60 = 15, p5: 120-100 = 20, p6: 115-105 = 10