Current Electricity Test

Result

Current Electricity Test - 116

Score
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Weekly Quiz Competition

Question 1
4 / -1

Time taken by a 836 W heater to heat one litre of water from 10°C to 40°C is

A
30 s

B
100 s

C
150 s

D
200 s

Solution
Question 2
4 / -1

An electric bulb is rated 220 V – 100 W. The power consumed by it when operated on 110 V will be

A
75 W

B
40 W

C
25 W

D
50 W

Solution
Question 3
4 / -1

Which factor is immaterial for the wire used in electric fuse?

A
Length

B
Radius

C
Material

D
Current
Question 4
4 / -1

A railway compartment is lit up by thirteen lamps each taking 2.1 A at 15 V. The heat generated per second in each lamp will be

A
4.35 cal

B
5.73 cal

C
7.5 cal

D
2.5 cal

Solution
Question 5
4 / -1

A fuse wire with radius 1 mm blows at 1.5 A. The radius of the fuse wire of the same material to blow at 3 A will be

A
3^1/4 mm

B
4^1/3 mm

C
3^1/2 mm

D
2^1/3 mm

Solution
Question 6
4 / -1

For a thermocouple, the inversion temperature is 600°C and the neutral temperature is 320°C. Find the temperature of the cold junction?

A
40°C

B
20°C

C
80°C

D
60°C

Solution
Question 7
4 / -1

In a thermocouple, the neutral temperature is 270°C and the temperature of inversion is 525°C. The temperature of cold junction would be

A
30°C

B
255°C

C
15°C

D
25°C

Solution
Question 8
4 / -1

If the temperature of cold junction of thermocouple is lowered, then the neutral temperature

A
increases

B
approaches inversion temperature

C
decreases

D
remains the same
Question 9
4 / -1

Temperature of cold junction in a thermocouple is 10°C and neutral temperature is 270°C, then the temperature of inversion is

A
540°C

B
530°C

C
280°C

D
260°C

Solution
Question 10
4 / -1

For a given thermocouple, neutral temperature

A
is a constant

B
depends on cold junction temperature

C
depends on inversion temperature

D
double that of cold junction temperature