Capstone AT1 Flashcards
The physiological effects of current passing through a body can cause:
a: asbestosis
B: paralysis
C: muscle spasms and pain
D: difficulty in breathing
E: bruising
F: cramps
G: burns to tissue and organs
H: cardiac arrest
I: nervous system remains normal
J: difficulty focusing
K: osteoarthritis
B: paralysis
C: muscle spasms and pain
G: burns to tissue and organs
H: cardiac arrest
If current in a conductor is increased , the temperature of the conductor will:
A: increase
B: decrease
C: remain the same
D: reach a maximum
A: increase
Complete the following statement. An electric motor rotates due to:
A: chemical effect of the current
B: magnetic effect of the current
C: applied voltage
D: load driving it
B: magnetic effect of the current
Electroplating is a method of transferring metals to create coatings using:
A: voltage effect
B: resistive effect
C: voltage flow
D: current flow
D: current flow
Which of the following is an example where current can produce light is?
A: battery
B: incandescent lamp
C: electroplating
D: magnetism
B: incandescent lamp
Three lights are connected in series, if one of the three lights open circuits.
A: no lights will work
B: one light will work
C: two lights will work
D: two lights will go brighter
A: no lights will work
A “short circuit” is one that
A: has something in the circuit to limit the current
B: has negligible load in the circuit to limit the current
C: has something in the circuit to limit the voltage
D: has no load in the circuit to limit the voltage
B: has negligible load in the circuit to limit the current
The criteria for NOT selecting a motor starter is to . . .
A: Achieve the required starting current
B: Achieve the required starting torque
C: Comply with supply authority requirements
D: Increase starting current
D: Increase starting current
Overload protection for motors can be categorised into different methods. What are they?
A: capacitive, dynamic
B: Thermal, thermistor
C: Dynamic, thermistor
D: Capacitive, magnetic
B: Thermal, Thermistor
Below are 4 common types or electric motor enclosures. Which enclosure would suit a motor that may have small splashes of water dropped on it and also requires cooling?
A: Open Drip Proof
B: Totally Enclosed Non-Ventilated
C: Totally Enclosed Fan Cooled
D: Explosion Proof
C: Totally Enclosed Fan Cooled
When connecting a variable speed drive to a three phase motor, what should be used to avoid interference?
A: Elastomeric cables
B: X-HF-90 cables
C: Three or Four core twisted cables
D: Insulated annealed copper cables
E: Screened cables
E: Screened cables
Which drawing is correct? The components are joined so that the energy source is switched, the circuit is protected and the loads are in parallel?
B.
Using conventional symbols, sketch a ladder diagram control circuit and a basic power circuit including overloads in the marked boxes below for a DOL three phase motor
What is the attached picture showing
A star delta motor circuit
