Question 1

Which one of the following measures the real power drawn by the load equipment?

Options :

A : Watts

B : Amps

C : Volts

D : Amperes

Answer: A

Question 2

What indicates the breaking capacity of a fuse or breaker?

Options :

A : Mechanical strength of the casing of a fuse or breaker.

B :

The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle without being destroyed or causing an electric damaging arc.

C : The current at which the device will trip.

D :

The current that a fuse or breaker is able to interrupt without being destroyed or causing an electric damaging arc.

Answer: D

Question 3

Is it allowed to make design changes during the implementation phase?

Options :

A : No, after a design freeze no further changes are allowed.3

B : Any change is fine as long as it is within the scope of the project.

C : Yes, but only when time to implement is not exceeded.

D : Only when there is a strong business and/or technical justification.

Answer: D

Question 4

Which formula is correct?

Options :

A : Phase-to-Neutral Voltage = Phase-to-Phase voltage * 1.732

B : Phase-to-Neutral Voltage = Phase-to-Phase voltage .732

C : Phase-to-Neutral Voltage = Phase-to-Neutral voltage * 1.732

D : Phase-to-Neutral Voltage = (Phase-to-Phase voltage * 1.732) / Phase-to-Neutral Voltage

Answer: B

Question 5

An air-conditioner unit needs to be selected. Two types are available: Unit-A has a Sensible Heat Ratio (SHR) of 0.7. Unit-B has a Sensible Heat Ratio (SHR) of 0.9. From an efficiency point of view, which one should be selected?

Options :

A : It does not matter, as the Sensible Heat Ratio has nothing to do with efficiency

B :

Not relevant, as Sensible Heat Ratio is only specified for air-conditioner equipment to indicate the ratio between intake temperature and exhaust temperature.

C : Unit A

D : Unit B

Answer: D

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