Electrical Engineering Mcqs

You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect__________?

• (A)  two in parallel
• (B)  two in parallel and one in series
• (C)  three in parallel
• (D)  three in series

Answer

Submitted By :Ali Uppal

Which of the following material has nearly zero temperature co-efficient of resistance_________?

• (A)  Manganin
• (B)  Porcelain
• (C)  Carbon
• (D)  Copper

Answer

Submitted By :Ali Uppal

Current velocity through a copper conductor is___________?

• (A)  the same as propagation velocity of electric energy
• (B)  independent of current strength
• (C)  of the order of a few ^.s/m
• (D)  nearly 3 x 108 m/s

Answer

Submitted By :Ali Uppal

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is_____________?

• (A)  6.4 A, 6.9 A
• (B)  6.4 A, 9.6 A
• (C)  4.6 A, 6.9 A
• (D)  4.6 A, 9.6 A

Answer

Submitted By :Ali Uppal

Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 25 Q. If the same four wires are connected is series the effective resistance will be________?

• (A)  100 Ω
• (B)  200 Ω
• (C)  300 Ω
• (D)  400 Ω

Answer

Submitted By :Ali Uppal

The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?

• (A)  18 Q
• (B)  36 Q
• (C)  48 Q
• (D)  64 Q

Answer

Submitted By :Ali Uppal

A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___________?

• (A)  400 Q
• (B)  600 Q
• (C)  800 Q
• (D)  1000 Q

Answer

Submitted By :Ali Uppal

In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is

• (A)  33 V
• (B)  66 v
• (C)  80 V
• (D)  132 V

Answer

Submitted By :Ali Uppal

Insulating materials have the function of___________?

• (A)  preventing a short circuit between conducting wires
• (B)  preventing an open circuit between the voltage source and the load
• (C)  conducting very large currents
• (D)  storing very high currents

Answer

Submitted By :Ali Uppal

Insulating materials have the function of______________?

• (A)  preventing a short circuit between conducting wires
• (B)  preventing an open circuit between the voltage source and the load
• (C)  conducting very large currents
• (D)  storing very high currents

Answer

Submitted By :Ali Uppal