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

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

please send me RRB electrical engineer previous year questions for Sr. Section Engineer

1499


what is package substation.how many types they have

1680


WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.

3054


boiler is running in rankine cycle and deisel generator is....?

1581


how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

1471






Give atleast 20 alternating current apparatus and devices.

1269


1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

4231


How to select transmission line type (i.e. 11kv or 33kv) for new established industries

1612


Define coil span?

646


do anyone out there know where to find a compleete list on acronyms/abbreviations used in offshore electric engineering. MCB - Micro Circuit Breaker, MCCB-Mouldes Case Circuit Breaker, ELCB-Earth Lekage Circuit Breaker, ELMCB- etc.....

1585


What is Auto Mains Failure Panel & Auto Synchronizing Panel

1455


how generator avr give to the input?

1501


what is rocking arrangement in arc heating

1695


What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?

1630


The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1487