EE 1st set greenbok

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 |VNS| = |VR| = 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 3Ø, 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