A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed? 882 rpm 1425 rpm 798 rpm 1575 rpm TRUE ANSWER : ? YOUR ANSWER : ?
A single phase motor connected to 400 V, 50 Hz supply takes 25 A at a power factor of 0.75 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.95 lagging. 92.55 pF 82.55 pF 72.55 pF 62.55 pF TRUE ANSWER : ? YOUR ANSWER : ?
Which is the function of Operating System? Devices Management Security All of these Process Management TRUE ANSWER : ? YOUR ANSWER : ?
Fill in the blanks with suitable Article from the given alternatives.<br/>Everyone is ready to accept ____ new rules framed by the executive body No article the an a TRUE ANSWER : ? YOUR ANSWER : ?
Consider the following statements and choose the correct option.<br/>Statement 1: DVR (Dynamic Voltage Restorer) is a series compensation device.<br/>Statement 2: DVR protects sensitive electric load from power quality problems such as voltage sags, swells, unbalance and distortion through power electronic controllers."<br/>Statement 2: In a synchronous motor, at no-load condition, and with normal excitation the armature current Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are TRUE Both Statement 1 and Statement 2 are FALSE Statement 1 is FALSE and Statement 2 is TRUE TRUE ANSWER : ? YOUR ANSWER : ?
A delta-connected balanced three-phase load is supplied from a three phase, 400 V supply. The line current is 20 Aand the power taken by the load is 10 kW. Find the power consumed if the same load is connected in star. 21.77 W 30 W 3.33 W 16.33 W TRUE ANSWER : ? YOUR ANSWER : ?
A 50 Hz synchronous generator is connected to an infinite bus through a line. The p.u. reactances of generator and the line are j0.4 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that of infinite bus is 1.0 p.u. The inertia constant of the generator is 4 MW-sec/MVA. Determine the frequency of natural oscillations if the generator is loaded to 60% of its maximum power transfer capacity and small perturbation in power is given. 1.8 Hz 1.2 Hz 0.8 Hz 1.6 Hz TRUE ANSWER : ? YOUR ANSWER : ?
Replace the braketed phrase grammatically and conceptually with the help of the given opation. If the given sentence is correct then select the option ’The given sentence is correct’.<br/>The corono virus continued to spread, with the development of infections advancing quickly continued to spreading, with the development of infections The given sentence is correct continued for spread, with the development of infections continue to spread, with the development of infections TRUE ANSWER : ? YOUR ANSWER : ?
The magnetizing inrush current in a transformer is rich in the harmonic component. fifth seventh second third TRUE ANSWER : ? YOUR ANSWER : ?
What are the main challenges that the electric grid faces? Increase in Energy Demand Global rise in temperature Reliability and Power Quality is Declining All of these TRUE ANSWER : ? YOUR ANSWER : ?