Quiz - MPCB SM... Series

1. Final quiz.

Welcome to our final quiz on MPCBs. Do your best and don't worry to fail, you can retry it all the times you want.

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* 1. Which is the correct test sequence for Ics:

Sequence test: Open-pause-Close&Open-pause-Close&Open

Sequence test: Open-pause-Close&Open.

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* 2. MPCBs SM Series have several accessories. For example:

add-on auxiliary contacts, enclosures, residual current relays, ...

add-on auxiliary contacts, enclosures, undervoltage trip releases, ...

add-on auxiliary contacts, enclosures, , fuses, ...

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* 3. Series SM MPCBs are UL508 certified:

False

True

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* 4. Are the SM series MPCBs sensitive to phase failure?

True

False

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* 5. If a short circuit is just occurred, the SM1R... motor protection circuit breaker (Rotary Knob type)

... gives the "trip" indication of the knob and shows the red flag

... shows only the red flag

... gives only the indication of "trip" of the knob

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* 6. The overload is an extemporaneous operating condition that causes the motor to overheat and to absorb a current greater than the nominal one due to:

resistant torque too high for the selected motor

locked rotor

high frequency of motor startings

one phase loss

too long starting times

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* 7. Choose one or more of the following functions that a SM Series mMPCB is able to perform

Isolation

Protection against overload and short circuit

Motor starting and stopping (on/off function)

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* 8. The overload protection must be sized based on the rated current of the ...

motor

short circuit

overload

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* 9. Which is the correct test sequence for Icu:

Sequence test: Open-pause-Close&Open.

Sequence test: Open-pause-Close&Open-pause-Close&Open

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* 10. Motor Protection Circuit Breakers have rated currents up to

100 A

32 A

40 A