when we see the lube oil grade its 15w/40 or 20w/40 in this
what is W Explain breifly
W -winter grade ( temp), 40 means SAE viscosity number
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when the direction of a 3phase induction motor is reversed , is there any losses increases?
what is creepage distance
how system voltage affect the power factor or vice-versa.
Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.
ht side line to earth voltage
What will happen if primary of transformer is fed with Square wave instead of sinsoidal wave ?Will it operate or Not?
what is the difference between circular wdg & ractangular wdg?
If there is 25 hp motor,which type of starters we can us? why?
what is the meaning of knee point in current transformer and how to calculate?
Is there such a frequency as 440v 50Hz?
at present how many EHVAC lines are there in India?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm