EE-PREBOARD MULTIPLE CHOICES

An initially uncharged capacitor C is connected in series with resistor R. This combination is then connected to a battery of emf V₀. Sufficient time elapses so that a steady state is reached. Which of the following statements is NOT true?

• The total thermal energy generated by R is independent of R

• The total thermal energy generated by R is independent of Vo

• The final charge on C is independent of R

• The time constant is independent of Vo

An alternator running in parallel with the other alternators all having automatic voltage regulators is to be taken off the bus. The usual procedure before opening the switch is to ______.

• reduce the power fed to the prime mover

• reduce alternator excitation

• do nothing

• increase alternator excitaiton

Which gas is formed near to the conductors by producing a hissing noise?

• ozone

• nitrogen

• oxygen

• hydrogen

Which photometer is used for comparing the lights of different colors?

• Guilds Flicker Photometer

• Grease spot Photometer

• Bunson photometer

• Lummer Brodhum Photometer

Which one does not belong to the technical performance standards of the Philippine Distribution Code?

• Collection efficiency

• Plant efficiency

• load distribution

• reliability

Which of the following shall be included in the calculation of the reliability standard indices of the distributor asset by the Philippine Distribution Code?

• Outages that occur on the primary lines of the distribution system

• Planned outages where the customers have been notified at least three (3) days prior to the loss of power

• outages that occur in he transmission line

• Outages that occur on the secondary lines of the distribution system

A mode of communications in which either party can hear while talking, thus allowing one party to instantly interrupt the other at any time, is called _____.

• Full duplex

• Half duplex

• full simplex

• half simplex

The overcurrent protective device is caused to operate by _____.

• current flow

• voltage surge

• impedance

• voltage drop

The distinguishing characteristic of this configuration of a system is that it cannot compensate for any disturbances that add to the controller`s driving signal.

• open-loop systems

• closed-loop systems

• disturbance configuration

• transducer configuration

Which of the following is an example of a load with leading power factor?

• synchronous motors

• water heaters

• incandescent lamp

• doorbells