BEEE_B2slot

The voltage e0 in Fig. is

• 2

• 4

• 8

• 4/3

The voltage across the terminals a and b in Fig. is

(neglect 1H in the diagram its a typo)

• 0.5

• 3

• 3.5

• 4

Find the Input Impedance of the shown circuit

• 2+j3.84 ohms

• 2-j3.84 ohms

• 2+j4.87 ohms

• 2-j4.87 ohms

How much energy does a 100-W electric bulb consume in two hours?

• 200 Joules

• 720 Joules

• 72000 Joules

• 720000 Joules

The equivalent resistance between nodes 12, 23 and 31 respectively are?

• 9, 24 and 12 ohms

• 18, 24 and 9 ohms

• 6, 18 and 12 ohms

• 18, 12 and 2 ohms

What does the slope in the figure determines

• Magnetic field

• Capacitance

• Resistance

• Inductance

Find the current through a 5-H inductor if the voltage across it is

v(t) = 30t² for t less than 0 and v(t) = 0 for t greater than 0.

• 2t

• 2t²

• 2t³

• 2t⁴

What is the unit of the following?

a. Real Power

b. Apparent Power

C. Reactive Power

D. Complex power

• a. VA

  b.VA

  C.W

  D.VAR

• a. W

  b. VAR

  c.VA

  d. VA

• a. W

  b. VA

  c.VAR

  d. W

• a. W

  b. VA

  c.VAR

  d. VA

Two coils are wound on a toroidal core as illustrated in Figure . The reluctance

of the core is 10⁷ (ampere-turns)/Wb. Determine the mutual

inductance of the coils.

• 1mH

• 2mH

• 3mH

• 4mH

Suppose that we have a 4700-V-rms ac source and we need to deliver 220 V rms to a

load. Determine the turns ratio N1/N2 of the transformer needed.

• 21.36

• 0.046

• No turns needed

• 15.10