Alternating current and voltage interview question
11. If you increase the rotational speed of the conductor in a basic generator, the frequency of the resulting sine […]
11. If you increase the rotational speed of the conductor in a basic generator, the frequency of the resulting sine […]
6. The instantaneous voltage at 120° on a 5 V peak sine wave equals about –4.33 V. A. True
1. One revolution of a conductor through the magnetic field of a basic generator will produce two complete sine waves.
16. What is the average voltage when a rectangular wave’s base line voltage is 20 V, its peak-to-peak voltage is
6. What is the instantaneous peak voltage at 250° on a 6 V peak sine wave? A. +5.64 V
1. What type of waveform is shown in the given circuit? A. Sine wave B. Square wave C.
26. Which unit of charge contains 6.25 × 1018 electrons? A. An ampere B. A coulomb C.
21. One coulomb passing a point in one second is one: A. ampere B. volt C. ohm
26. Which unit of charge contains 6.25 × 1018 electrons? A. An ampere B. A coulomb C.
21. One coulomb passing a point in one second is one: A. ampere B. volt C. ohm
16. Which voltage source converts chemical energy to electrical energy? A. Electrical generator B. Battery C. Solar
11. A voltmeter is used: A. to measure current B. in series with the circuit C. in
6. The battery symbol is: A. mca1_1009a1.gif B. mca1_1009b1.gif C. mca1_1009c1.gif D. mca1_1009d1.gif Answer & Explanation
1. What is the color code for a 220 omega.gif 5% resistor? A. Red, Red, Brown, Gold B.
1. A reverse biased diode will act as an open switch. A. True B. False Answer & Explanation
1. A reverse biased diode will act as an open switch. A. True B. False Answer & Explanation
46. In a power supply diagram, which block indicates a pulsating dc output? A. transformer B. filter C.
41. Providing a constant output regardless of ac input or load resistance changes is the function of a: A.
21. When a diode is forward biased, the voltage across it A. is directly proportional to the current B. is
16. What is the current through the diode? A. 1 mA B. 0.975 mA C. 0.942 mA D. 0.0 mA
11. Since diodes are destroyed by excessive current, circuits must have: A. higher voltage sources B. current limiting resistors C.
6. When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is
1. What is a varistor? A. a voltage-dependent resistor B. a voltage-dependent diode C. a current-dependent resistor D. a current-dependent
6. When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is
1. What is a varistor? A. a voltage-dependent resistor B. a voltage-dependent diode C. a current-dependent resistor D. a current-dependent