EE 1-1

In how many years will the energy consumption of the Philippines be quadrupled at 6.9% annual growth rate?

• 5

• 10

• 15

• 20

What does ACSR conductor stand for?

• All Conductors Surface treated and Realigned

• Aluminum Cable Steel Reinforced

• Anodized Core Steel Reinforced

• Aluminum Cable Stranded Reinforced

Two resistors R1 and R2 are connected in parallel. R1 is twice of R2. If the current in R1 is I, what is the current in R2?

• I

• 2I

• 4I

• I/2

The rotor of a 3-phase, 60-Hz, 4-pole induction motor takes 120 kW at slip frequency of 3 Hz. Determine the rotor speed.

• 1674 rpm

• 1728 rpm

• 1710 rpm

• 1692 rpm

The resistance of the rod does NOT depend on:

• its temperature

• its material

• its length

• the shape of its (fixed) cross-sectional area

A certain galvanometer has a resistance of 100 Ω and required 1 mA for full scale deflection. To make this into a voltmeter reading 1 V full scale, connect a resistance of:

• 1000 Ω in parallel

• 900 Ω in series

• 1000 Ω in series

• 10 Ω in parallel

The electrical analog of a spring constant k is:

• L

• 1/L

• C

• 1/C

If |Vsl| = |Vsl| = 33 kV (three-phase) and X = 13 ohm per phase, what will be the maximum power transmission per phase?

• 29 MW

• 30 MW

• 60 MW

• 28 MW

A delta 3φ, 4-wire secondary 240/120 V would have a high leg to neutral voltage of

• 208 V

• 240 V

• 277 V

• 199 V

Which transformer has only one winding?

• distribution transformer

• power transformer

• autotransformer

• isolated winding transformer