Out of the following which is not a poor conductor? Mark as favorite Copy Link Cast iron Copper Carbon Tungsten Check Answer
If the efficiency of a machine is to be high, what should be low? Mark as favorite Copy Link Input power Losses True component of power kWh consumed Check Answer
You have to replace 1600? resistor in radio. You have no 1600? resistor but have several 1000? ones which you would connect? Mark as favorite Copy Link two in parallel two in parallel and one in series three in parallel three in series Check Answer
The thickness of insulation provided on the conductor depends on? Mark as favorite Copy Link the magnitude of voltage on the conductor the magnitude of current flowing through it both (a) and (b) none of the above Check Answer
A 500 W, 220 V bulb is supplied with 110 V. Power consumption by the bulb will be? Mark as favorite Copy Link slightly less than 125W slightly greater than 125W exactly 125 W 250W Check Answer
Two bulbs of 600 Wand 200 W rated at 250 V will have resistance ratio as? Mark as favorite Copy Link 4 : 25 25 : 4 2 : 5 5 : 2 Check Answer
Which of the following statement is correct? Mark as favorite Copy Link A semi-conductor is a material whose conductivity is same as between that of a conductor and an insulator A semi-conductor is a material which has conductivity having average value of conductivity of metal and insulator A semi-conductor is one which conducts only half of the applied voltage A semi-conductor is a material made of alternate layers of conducting material and insulator Check Answer
Three 6 ohm resistors are connected to form a triangle. What is the resistance between any two corners? Mark as favorite Copy Link 3/2 ? 6 ? 4 ? 8/3 ? Check Answer
Which of the following statement is true both for a series and a parallel D.C. circuit? Mark as favorite Copy Link Elements have individual currents Currents are additive Voltages are additive Power are additive Check Answer
Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be? Mark as favorite Copy Link 9 times 1/9 times 1/3 times 3 times Check Answer