The voltage per turn of primary of transformer is ___________ as compared to voltage per turn of secondary: Less More Same Can’t predict from given data Correct answer: 3. Same The voltage per turn of primary of transformer is same as compared to voltage per turn of secondary.
If voltmeter connected in configuration below reads 5 V, then what is the value of resistor R: 200 kΩ 500 kΩ 780 kΩ 1.2 MΩ Correct answer: 3. 780 kΩ Solution: Step by step solution video
Of given instruments which of the following instruments is free from hysteresis and Eddy current errors: Dynamometer instrument Moving iron instrument PMMC instrument Electrostatic instrument Correct answer: 4. Electrostatic instrument Electrostatic instruments don’t employ iron and are hence free from hysteresis and eddy current losses.
The scale of ohmmeter is: Linear Non-linear Correct answer: 2. Non-linear
The circuit component which opposes change in voltage is: Resistor Capacitor Inductor None of these Correct answer: 2. Capacitor
As compared to DC, the transmission losses in AC are: Low High Neligible None of these Correct answer: 2. High
The inductive reactance of a circuit is _____________ frequency: Directly proportional Inversely proportional Independent of Correct answer: 1. Directly proportional Explanation: XL = 2πfL XL = Inductive reactance f = Frequency
The form factor of which type of wave is 1: Sinusoidal Square Triangular Sawtooth Correct answer: 2. Square Explanation: The form factor is defined as a ratio of R.M.S Value to average value. The form factor of Square wave is 1. Where the form factor of sin wave is The form factor of sinusoidal waveform … Read more
Which of the following applications will only work on DC: Heater Refrigerator Electroplating Lamp Correct answer: 3. Electroplating
The dielectric used in variable capacitor is generally: Solid metal Air Correct answer: 2. Air