In a lead acid cell PbSO4 formed during charging only. neither during charging nor discharging. discharging only. both during charging as well as discharging. TRUE ANSWER : ? YOUR ANSWER : ?
In above question, if circuit efficiency is 90 %. What will be output power ? 40 kW. 30 kW. 35.6 kW. 37.3 kW. TRUE ANSWER : ? YOUR ANSWER : ?
Current magnification will occur in which of the following case? Series resonance Parallel resonance Both None of these TRUE ANSWER : ? YOUR ANSWER : ?
Atoms have no electric charge because they have an equal number of charged and non charged particles. have neutrons in their nuclei. have an equal number of neutrons and protons. have an equal number of electrons and protons. TRUE ANSWER : ? YOUR ANSWER : ?
How many 200W / 220V bulbs connected in series across 220V supply will consume 100W? Not possible. 2. 4. 1. TRUE ANSWER : ? YOUR ANSWER : ?
For a band pass filter, cut off frequency of the low pass filter should be ___ of the high pass filter? All of these greater than equals to less than TRUE ANSWER : ? YOUR ANSWER : ?
What is referred as the average value in AC opearation? Average of all values of the (+)ve and (-)ve half. Average of all values of the phase sequences. Average of all values of an alternating quantity over a complete cycle. Average of all values of an alternating quantity. TRUE ANSWER : ? YOUR ANSWER : ?
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A. 2.56 0.5 1 3.149 TRUE ANSWER : ? YOUR ANSWER : ?
A voltage of v = 100 sin (wt + π/3) is applied to pure resistor of 30 Ohm. What is the RMS value of current is 4.71. 5.77. 2.36. 1.92. TRUE ANSWER : ? YOUR ANSWER : ?