A transformer has 400 turns of wire in the primary coil a...
A transformer has 400 turns of wire in the primary coil and 40 turns in the secondary col. If the input voltage is 150 volts. Calculate the magnitude of the output voltage
150V
55V
36V
15V
Correct answer is D
\(\frac{ES}{EP} = \frac{Ns}{Np} = \frac{Es}{150} = \frac{40}{400}\)
Es = \(\frac{150 \times 40}{400}\)
= 15V
Which of the following is/are TRUE of nuclear fission? I. A heavy nucleus is split into two nucl...
A radioactive element has a decay constant of 0.077s-1. Calculate its half-life...
A quantity of water at 0 °C is heated to 30 °C. For each degree rise in temperature, its den...
An electric iron is rated 1000W, 230V. What is the resistance of its elements? ...
A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the ce...
Which of the following statements is not correct about steel and soft iron? ...
Ripples on water are similar to light waves in that they both ...