Electrical Engineering Questions and Answers


11)

A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?


Answer: Option B

Explanation:

Kwh = (350*24*24)/1000
= 201.6kWh

12)

In 0.025 W, there are


Answer: Option D

Explanation:

0.025w=25*10^-3=25mw

13)

When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is


Answer: Option B

Explanation:

r=0 when short circuited
r=infinity(high) when open circuited.

14)

A 33 Ω half-watt resistor and a 330Ω half-watt resistor are connected across a 12 V source. Which one(s) will overheat?


Answer: Option D

Explanation:

15)

The current in a given circuit is not to exceed 24 A. Which value of fuse is best?


Answer: Option C

Explanation:

Yes, answer is 24A. If current flow exceeds 24A then fuse works and breaks up the circuit, till then circuit is safe