What are the causes of positive and negative propeller slip?

2117

. What is a magnetic valve of refrigeration system?

1513

How do you measure the moment of inertia?

646

what is ATS & RING MAIN UNIT in Distribution System?And its Function.

1504

Which tests are performed on soil to decide the type of foundation to be provided.

1636

which has high compressive strength between hollow block and brick masonry?

1856

What is turbocharger and his rpm

1114

What is the use of water table & Kreb stone for drain

1367

Explain what is a state table?

647

Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.

1822

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1732

Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere

1192

What are the advantages of diesel engines?

597

Draw a crankshaft and show the parts?

1548

I have got one problem .I initially have got windows vista in my computer but now I installed linux UBUNTU operating system into my computer .For this i first format D: drive and got installed finely there and restart , when it boots there there were two options vista and ubuntu .But the problem is that when i choose vista it opens but screen seems to be dark only mouse pointer sees in the screen and no more windows appeared . But when i choose ubuntu it opens and asks for username and password .But i don't know these things. But linux is freeopen software , why it asks userename and password ? Now i am unable to use my computer ,i installed lunux without partioning the drive. Plz give me the solution The computer configuration of my computer is 80 GB harddisk, 1 GB RAM.3GHz speed.

1402