Q.97 The signal frequency in a CRO is:Ans 1. more than 1 MHz2. less than 1 MHz3. more than 10 MHz4. more than 10 HzCorrect Ans: 3
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Q.96 Primary distribution is carried out by _____________.Ans 1. two phase three wire system2. three phase three wire system3. single phase three wire system4. single phase two wire systemCorrect Ans: 2
Q.93 The speed of the aluminum disc in an energy meter is controlled by __________.Ans 1. shunt and series magnets2. series magnet3. shunt magnet4. braking magnetCorrect Ans: 4
Q.98Ans 1. 20H2. 48H3. 100H4. 70HCorrect Ans: 1
Q.94 Which of the following statements is/are true regarding AC distribution system and DC distribution system?a) In DC distribution system, the voltage drop is due to resistance only.b) In AC distribution system, the voltage drop is ...
Q.84 An alternating voltage v= 200 sin 100t. Find the amplitude and frequency.Ans 1.2.3.4.Correct Ans: 4
Q.89 Which of the following statements is NOT correct about different type of waveforms?Ans 1. The current or voltage for unidirectional waveforms or signals remains the same,although varying. It never crosses the zero line.2. Bidirectional waveforms have both ...
Q.74Ans 1. 10A2. 30A3. 15A4. 5ACorrect Ans: 4
Q.73 Which of the following statements is FALSE about LED lamps?Ans 1. An LED works in forward biased condition only.2. An LED is a semiconductor device.3. An LED is doped with silicon and germanium like all semiconductor devices.4. ...
Q.81 Grading of cable is done in order to _____________.Ans 1. achieve the no-uniform stress2. reduce the quality of insulation3. achieve the uniform stress4. increase the quantity of insulationCorrect Ans: 3
