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» The equivalent circuit shown represents a / an ................. Gate.
The equivalent circuit shown represents a / an ................. Gate.
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A 50 HZ alternator will run at the greatest possible speed if it is wound for ...... poles A 50 HZ alternator will run at the greatest possible speed if it is wound for ...... poles A. 8 B. 6 C. 4 D. 2 Explanatory answer: Ns=120F/P Alternators always runs at synchronous speed and which is inversely proportiona… Read More
The quantity of charge that will be transferred by a current flow of 10 A over 1 hour period is The quantity of charge that will be transferred by a current flow of 10 A over 1 hour period is a. 10 C b. 36000 C c. 2400 C d. 160 C Answer: t= 1 hr = 3600 sec Q=I*t = 10*1*3600 = 36000 coulombs … Read More
A sine wave of voltage varies from zero to maximum of 200 V. How much is the voltage at the instant of 30 deg of the cycle ? A sine wave of voltage varies from zero to maximum of 200 V. How much is the voltage at the instant of 30 deg of the cycle ? A. 50 V B. 82.8 V C. 100 V D. 173.2 V Explanatory answer: In general, Sine wave form is represe… Read More
The r.m.s. value of sinusoidal 100 V peak to peak is _________ volt. The r.m.s. value of sinusoidal 100 V peak to peak is _________ volt. (A) 100 √2 (B) 50√2 (C) 50 (D) 100 Explanatory answer: For sinusoidal, Rms value = peak value / √2 Vpeak = Vp-p / 2 = 100/2 = … Read More
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density A. increases B. decreases C. remains the same D. doubles Explanatory answer : B Flux density = flux / area So if… Read More
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