ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION MARCH 2016

Which of the following is not a full-duplex?

• Radar

• Telephone

• Tolemetry

• Local Area Network

In a circuit breaker, the time duration from the instant of the fault extinction of arc is known as

• Operating time

• total clearing time

• Lag time

• lead time

For an RL circuit, the power factor cannot be less than ______ or greater than

• 0,1

• 1,0

• 0, -1

• -1, 0

is the overall energy program formulated and updated yearly by the DOE, submitted to the congress pursuant to RA 7638.

• Philippine Energization Program

• Philippine Energy Plant

• Philippine Electrification Program

• Philippine Electrification Plan

The lighting load for a dwelling expressed in terms of a unit load in volt ampere per square meter must be at least

• 24

• 12

• 16

• 2

The capacitors of power factor correction are rated in terms of

• KV

• KW

• KVA

• KVAR

In a balanced three phase wye connected circuit, the ine voltage are equal

• To the line current

• To the phase voltage

• and so are the line currents

• but the line currents are unequal

If a given circuit when the power factor is unity the reactive power is

• Maximum

• equal to i2 r

• zero

• minimum

Joule found out that the heat produced in a current carrying conductor is proportional to

• The square of the current

• The current

• the square of resistance

• inversely proportional to time

In a wye connected system, line current is

• 0.707 times the phase current

• 1.735 times the phase current

• equal to the phase current

• 1.414 the phase current