Using 2 switches of the type 'single pole double throw', sketch an electrical diagram to show how an upstairs light bulb can be controlled from either the hall downstairs or from the upstairs landing....
A low frequency amplifier has a power gain of 50 dB. The input of the amplifier is 800 ohms resistive. The output is arranged for a 8 ohm loudspeaker. What will be the rms current in the speaker if a...
You must show your working. Only ruler and pair of compasses allowed. The link below shows the layout of a department office 20 metres by 12 metres. A photocopier is to be installed under certain...
The link below shows a recreation area open to the general public. A park bench is to be installed under the following constraints: i. The bench is to be equidistant from point B and from point D ii....
43 UK students were asked if they had visited France, Germany or Denmark. 10 students had been to France 1 student had visited all three countries 2 students had visited France and Germany but not...
The diagram (see link below) shows 3 identical circles, each with radius 6cm. The centre of each circle is represented by A, B and C respectively, such that points ABC form a straight line. Calculate...
Unknown Resistor R? dissipates 3.75 Watts. Find the value of R? Ohms. There is no time limit on this one! Once again, student does have an answer. See link below:
https://ibb.co/qB5VK7w...
The son of our next door neighbour is doing HND in Electrical and Electronic Engineering and requires some assistance. He has asked me to help but it's a little beyond me. I told him that I'm sure...
I recently moved house and the boundary fence separating me from the next door neighbour is rotten an collapsing into my garden. The neighbours are strange people and don't speak so I'm unable to...
Yesterday I phoned a friend (he is housbound due to a stroke) on his mobile from my BT landline and I received the message "the call cannot be answered right now. Please leave a message after the...
What is the name of numbers whose binary codes are minimally different? I'd like to Neeva them to see if they have an addition algorithm. The numbers 1 to 9 are coded 1, 11, 10, 110, 111, 101, 100,...
I wandered down the cheese aisle of my local supermarket in a dream-like state, and accidentally put my favourite Mexican cheese in someone else's shopping trolley. I was rudely brought to my senses...
