0
friction in machines is undesirable becouse becouse the materials used to make them are always in griding form. ALLY S. MUBA-ngarambe
Maryjane Konopelski
Wiki User
∙ 14y agoComputers run on electricity. The metals and semiconductors out of which the computer components are made all have a slight resistance to the flow of the electric current and this causes them to heat up in use.
Wiki User
∙ 11y agoDue to friction
Wiki User
∙ 10y agofriction
Add your answer:
Earn +20 pts
What is the term for extra heat given off by machines?
Waste heat
Does covalent bonds give water a low heat capacity?
yes it does give a low heat capacity.
Heat capacity is the characteristic of a material to?
Retain. And give. Off heat and energy
Why does a compost pile give off heat energy?
when the materials are being broken down, the microbes warm up and give off heat.
How do you make a smokebomb?
four parts KNO3 to six parts suger melt and ster over a low heat till it goes brown then pack it in to a container. when lit it should give off a cloud of brown smoke (If you add colouring to the mixture the colour of the smoke will be that colour).
Why machines are applied with grease?
It's to reduce friction (and thus heat) generated while the machine's parts are moving.
Why are transformer more efficient that rotating electric machines?
Because the electrical parts of a transformer do not move / rotate.
Why is it important to reduce friction on moving parts of machinery?
Friction creates heat. Heat could melt machine parts if it becomes too high. That's why many machines use lubricants while they're drilling or shaping metal.
Why are tools and machines coated with greases?
The grease is there to lessen friction between two metal parts. Without grease the moving parts would heat up due to the friction.
What are disadvantages of heat produced by friction in machines?
energy used for the machine will get lost as heat .machine parts will get worn out.
Is it true that lubrication in vehicles moving parts prevents damage from heat and friction and keeps the moving parts operating efficiently?
yes
What two parts of an animal give off the most heat?
Tail and Ears
What machine has the most moving parts?
Most man- made machines have relatively low efficiency. For instance, a car or aeroplane is very noisy and will get very hot. This noise and heat is wasted energy and makes up a significant proportion of the total energy (fuel) input.
What are the functions of the heat?
The main purpose of a heat sink is to expel heat from a generating source. Heat sinks work through the process of conductive and convection heat transfer. Heat sinks are a passive form of cooling, as they have no moving parts and require no power.
Why is machine heated up when it runs for sometime?
Machines heated up due to the friction caused due to their running internal parts. That's's why machines are oiled or greased to reduce friction and to produce less heat
Why lubricating oil is used?
Lubricating oil is used to reduce friction between moving parts and to prevent damage due to excess heat. Lubricating oil also carries away sludge preventing the erosion of moving parts.
How and why friction is cut down in a car engine?
How - with cooling oil Why - because friction causes heat, and overheating is bad for moving parts.
