For the first part of this exercise take 3 images composed indoors under tungsten lighting at dusk when the light levels indoors and out are approximately even. Take 1 image with the white balance (WB) set to auto, another at daylight WB and the third set to tungsten WB. Compare the results.
Comparing the indoor tungsten to the outdoor lighting shows that tungsten lighting produces a warm yellow/orange colouring to a scene. The outdoor lighting appears blue in comparison. All 3 images were taken using spot metering and aperture f/5.6. ISO640 was used to increase the shutter speed and allow the images to be taken handheld.
Image 1 - Tungsten WB
Image 2 - Auto WB
Image 3 - Daylight WB
The results of this exercise show that both the tungsten and auto WB are fairly close in appearance and in this case either would have been acceptable with the daylight WB being the most inaccurate and giving a yellow/orange colour cast.