PREBOARD EE 6

The skin effect in conductors is due to non-distribution of current in it and major portion of the current is near the _____ of conductor.

• axis

• surface

• radial lines

• center

What is the maximum allowable continuous load for branch circuit conductor?

• 0.9

• 0.8

• 0.6

• 0.4

A resistance having a rating of 10 ohms, 10W is like to be a _____.

• Metallic Resistor

• Carbon Resistor

• Wire Wound Resistor

• Variable Resistor

Wideband FM is preferable to narrowband FM for music transmission because:

• Lower frequencies are heard better

• Spectrum space is conserved

• Narrowband FM is better for music

• The fidelity is better

"In any linear bilateral network, if a source of emf E is any branch produces a current I in any other branch, the same emf acting in second branch would produce the same current I in the first branch". This statement is associated with _____.

• Superposition Theorem

• Compensation Theorem

• Reciprocity Theorem

• Millman's Theorem

AC system has the following disadvantages over DC system EXCEPT:

• charging current exists

• skin effect exists

• line regulation is more

• proximity effect exists

An AM transmitter using a class-C PA should employ:

• High-level modulation

• Single sideband

• Carrier suppression

• Lower sideband

What governs the minimum safety requirement in the Philippines for distribution and grid?

• Philippine Electrical Code

• Philippine Distribution Code

• Philippine Grid Code

• Philippine Electrical Safety Code

This is the least prevalent shunt fault among transmission and distribution lines.

• LL

• LG

• LLG

• LLL

This is the maximum continuous anode direct current that the device can withstand in the conduction state under specified conditions.

• holding current

• average forward current

• forward current

• gate trigger current