ECT Review Pre-Final Exam

When was the effectivity of the Philippine Electronics Code (consisting of 4 books)?

• February 10, 2016

• February 14, 2016

• February 18, 2016

• February 20, 2016

How many PN junctions does a unijunction transistor have?

• Two

• Five

• Four

• One

The Philippine Electronics Code Book 3 which is for Cable Television System is composed of how many chapters?

• 10

• 11

• 12

• 13

Which group of materials are good electrical conductors?

• Gold, silver, wood

• Gold, silver, aluminum

• Copper, aluminum, paper

• Copper, gold, mica

Which of the following components has a positive and a negative side?

• Potentiometer

•  Fuse

• Resistor

• Battery

What is the modulus  of a five—stage binary counter?

• 16

• 31

• 15

• 32

The powers and functions of the Board os provided in _ of the R. A. No. 9292.

• Section 5

• Section 8

• Section 6

• Section 7

A full–wave bridge rectifier with a 120—V rms sinusoidal input has a load resistor of 1 kohm. If silicon diodes are employed, what is the dc voltage available at the load?

• 106. 40 V

• 109. 40 V

• 108. 40 V

• 107. 04 V

Sparking at the commutator of a D.C. motor must be avoided because it can _.

• cause power consumption to increase

• damage the commutator insulation

• damage the commutator segments

• all choices are correct

How many radians is equivalent to 320 grads?

• 3.26 radians

• 4.12 radians

• 6.12 radians

• 5.03 radians