ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION AUGUST 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

34.5 KV to 69 KV is classified as

• Low voltage

• Medium voltage

• High voltage

• Extra high vol

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 Plan

• 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

What is the emf induced in a coil of 500 turns and with a constant flux of 108 maxwells?

• 0v

• 5v

• 50v

• 500v

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

• To the line current

• To the phase voltage

• and so are the line currents

• but the line currents are unequal

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

• Maximum

• equal to i2 r

• zero

• minimum