The thermometer whose reading is indicated by a change in color of its thermometric property...

The thermometer whose reading is indicated by a change in color of its thermometric property is the?

A. bi-metalic strip thermometerB. thermocoupleC. platinium resistance thermometerD. optical pyrometerView ExplanationBookmark

Question 2

At 4°c, the volume of a fixed mass of water is?

A. constantB. minimumC. maximumD. zeroView ExplanationBookmark

Question 3

An electric heater rated 220v, 1000 w is immersed into a bucket full of water, calculate the mass of water if the temperature changes from 30°c to 100°c and the current flows for 300seconds.

[specific heat capacity of water = 4200 jkg-1 K-1]

A. 4.28 kgB. 42.86 kgC. 1.02 kgD. 7.14 kgView ExplanationBookmark

Question 4

A man standing 2 m from a charcoal fire is warmed mainly by?

A. convectionB. radiationC. refractionD. conductionView ExplanationBookmark

Question 5

Thermionic emission is the process whereby?

A. β - rays are producedB. holes are producedC. x - rays are producedD. electrons leave a hot elementView ExplanationBookmark?

In A.D Rufa'i College of Education, Legal & General Studies (ND)
2 Answers Available
Asked by Toba on 13th April, 2023