Well usually when you go on a diet, you don't really want gain weight, when you lose 20 pounds on a diet to 20 pounds that you lost got used as energy for your body, if you eat healthy then you can expect to see weight loss.
INDUCTION MOTOR:-
Speed:-Less speed range than PMAC motors • Speed range is a function of the drive being used — to 1,000:1 with an encoder, 120:1 under field-oriented control
Reliability:-Waste heat is capable of degrading insulation essential to motor operation • Years of service common with proper operation
Power density:-Induction produced by squirrel cage rotor inherently limits power density
Accuracy:-Flux vector and field-oriented control allows for some of accuracy of servos
Cost:-Relatively modest initial cost; higher operating costs
PERMANENT MAGNET MORTOR:-
speed:-VFD-driven PMAC motors can be used in nearly all induction-motor and some servo applications • Typical servomotor application speed — to 10,000 rpm — is out of PMAC motor range
Reliability:-Lower operating temperatures reduces wear and tear, maintenance • Extends bearing and insulation life • Robust construction for years of trouble-free operation in harsh environments.
power density:-Rare-earth permanent magnets produce more flux (and resultant torque) for their physical size than induction types.
Accuracy:-Without feedback, can be difficult to locate and position to the pinpoint accuracy of servomotors
<span>Cost:-Exhibit higher efficiency, so their energy use is smaller and full return on their initial purchase cost is realized more quickly</span>
C.
Explanation:
because they are equal in direction and differ in magnitude
Answer:
Explanation:
Average speed is given by
Total distance/ total time taken
So we need to know the distance in the first travel
Then
First part
Speed=60miles/hour
Time 3hours
Distance = speed × time
Distance = 60×3
Distance = 180 miles
Second part
Speed 45mile/hour
And time is 2hours
Distance = speed × time
Distance = 45× 2
Distance = 90miles
So total distance travelled for both cases is 90+180=270miles
And total time is 5hours
Then,
Average speed = total distance/total time
A.S=270/5
A.S= 54miles/hour
Answer:
If the combination of all the forces acting on an object sums upto be zero, then the net force is known as <u>balanced force.</u>
If the combination of all the forces acting on an object is non-zero, then the net force is said to be <u>unbalanced force. </u>The unbalanced force causes the object change the state of rest or motion.
