Electrical Engineering Mcqs

In a five-branch parallel circuit, there are 12 mA of current in each branch. If one of the branches opens, the current in each of the other four branches is_______________?

• (A)  48 mA
• (B)  12 mA
• (C)  0 A
• (D)  3 mA

Answer

Submitted By :Ali Uppal

Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately___________?

• (A)  2.2 A
• (B)  137 mA
• (C)  1.8 A
• (D)  9.09 A

Answer

Submitted By :Ali Uppal

Three lights are connected in parallel across a 120 volt source. If one light burns out_____________?

• (A)  the remaining two will glow dimmer
• (B)  the remaining two will glow brighter
• (C)  the remaining two will not light
• (D)  the remaining two will glow with the same brightness as before

Answer

Submitted By :Ali Uppal

When an additional resistor is connected across an existing parallel circuit, the total resistance____________?

• (A)  remains the same
• (B)  decreases by the value of the added resistor
• (C)  increases by the value of the added resistor
• (D)  decreases

Answer

Submitted By :Ali Uppal

Four resistors of equal value are connected in parallel. If the total voltage is 15 V and the total resistance is 600 Ω, the current through each parallel resistor is____________?

• (A)  25 mA
• (B)  100 mA
• (C)  6.25 mA
• (D)  200 mA

Answer

Submitted By :Ali Uppal

The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is_____________?

• (A)  1 A
• (B)  7 A
• (C)  unknown
• (D)  the larger of the two

Answer

Submitted By :Ali Uppal

If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is_________________?

• (A)  50 mA
• (B)  70 mA
• (C)  120 mA
• (D)  40 mA

Answer

Submitted By :Ali Uppal

The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is________________?

• (A)  1.2 W
• (B)  4.8 W
• (C)  0.3 W
• (D)  12 W

Answer

Submitted By :Ali Uppal

In a phase shift oscillator, the frequency determining elements are _______________?

• (A)  L and C
• (B)  R, L and C
• (C)  R and C
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Hartley oscillator is commonly used in______________?

• (A)  Radio receivers
• (B)  Radio transmitters
• (C)  TV receivers
• (D)  None of the above

Answer

Submitted By :Ali Uppal