Answer / prasd

according to thermodynamic,the heat can flow from low
temperature to high temperature by external work. for
example air conditioner

Answer / ishwar.vishwa

Plz tell me the correct answer

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.

Answer / rbg

a

Answer / santhosh s

B) Current

Answer / sree

due to current

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.

If we increase frequency in transmission line in lieu of voltage what will happen?

1 Answers  

A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

0 Answers  

If I need to purchase a step-down transformer (from three phase 33kV 50Hz to 400/230V), what additional information do I need from the main supply power line?

1 Answers   MahaDiscom,

why using touble tube lamp use in factory?

3 Answers   ONGC,

how to find motors H.P. whout any rating? (only give you a motor and multimeter)

3 Answers   L&T,

what is difference between Motorised MCCB & ordinary MCCB?

4 Answers   TCL,

plz tel me syllabus and exam date 4 jr executive engg (electrical)

0 Answers   AAI Airports Authority Of India,

There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

4 Answers  

What is bandpass of a transformer?

2 Answers  

IN 3 phase induction motor where we give i/p supply & how its working ?

2 Answers  

Why generally the Rating of Transformers are in additions of 11 i.e. 11 kVA, 22 kVa, 33 kVA, etc........

8 Answers  

CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

22 Answers   L&T,