Interested to Buy Any Domain ? << Click Here >> for more details...
heat can flow from a body at low temperature to a body at
higher temperature only when ........ is supplied from an
external source
A). Voltage B). Current C). work D). Mass
- 7 Answers
- 9286 Views
- BMRCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / prasd
according to thermodynamic,the heat can flow from low
temperature to high temperature by external work. for
example air conditioner
| Is This Answer Correct ? | 22 Yes | 4 No |
Answer / ajeet
its "B" Electric...
Thermo electric devices do this. Thermo electric devices "pull heat" to one side and leave the other side cooler. Radiating the heat from the hot side causes the cool side to become cooler. Some computer heat-sinks are made from this stuff, DC powered drink coolers are often made from this. In inverse you can generate electricity by adding heat to one side and cooling it on the other, I think it's Mercedes that's experimenting with replacing alternators with this stuff.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / parth
the correct answer would be (d) mass.
see, when you put a hot iron rod in water, it will transfer
its heat to the water and cool down, without providing any
voltage, current or doing any work on it. the only thing
required is a sufficient amount of water. so sufficient
Mass of water is required.
| Is This Answer Correct ? | 3 Yes | 9 No |
What is the most important precaution in any experiment with d.c. Shunt motor?
what is circuit recombiner and how it is different from circuit breaker
how we can varying the speed of dc motor ?
When star connection of motor is use?
How to calculate the CFM to TR? What is the Formula
can any tell me why slope 40% and 80% is calculated in differential protection?
what is the meaning of vcc
What is the relation between frequency and motor rpm?
Can we use generator transformer as step down transformer? How?
what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?
wath is this mining of bts
What will happen if supply frequency change in Transformer KVA rating ?
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
