State four (4) possible causes each of the following
troubles in dc motor and suggest two...
State four (4) possible causes each of the following
troubles in dc motor and suggest two
solutions to avert them:
(i) sparking at brushes, and (ii) overheating.
a) Describe how each of the following can be achieved
i. controlling a DC motor with pulse width modulator.
ii.controlling a stepper motor that has a built-in controller.
a) Describe how each of the following can be achieved
i. Controlling a DC motor with pulse width modulator.
ii. Controlling a stepper motor that has a built-in controller.
Suggest a DC motor drive which can cause very fast heating of an
automobile? Show circuit
diagram in case of series excited motor. (2). Propose an energy
efficient braking control mechanism that
can be used for practical traction systems.(Hint: The supply is
partly receptive)
For Four Quadrant chopper DC motor Drive:
A. Explain the generator action in forward direction according
to:
1. Circuit
2. Waveforms
3. Principal of work
B. Is it possible to discharge the load current using D3D4
switching strategy. Explain?
520/5000
State the hypotheses of the causes of why: of each of the
following alternatives.
A) automobile (without gasoline and without brake) slows down and
stops;
b) a book that slides on the table slows down and stops;
c) a falling chalk increases its speed until it hits the
ground;
d) a ball rolling down a slope increases its speed until it reaches
the lowest part;
e) The Moon moves around Earth and moves with approximately
constant speed.
Part two:...
For each of the following medications discuss causes and
consequences of noncompliance and possible solutions.
Cephalosporins
Corticosteriods
Sulfonulureas (as an adjunct to insulin therapy)
Levothyroxine
For each of the
following medications discuss causes and consequences of
noncompliance and possible solutions.
Sulfonulureas (as an
adjunct to insulin therapy)
Levothyroxine