Q.46 A resistor of 8 Ω and a capacitor of 178μF are connected in series to a 250V, 50 Hz supply.Net impedance of the circuit is given by 19.6 Ω. What is the value of reactive power?Ans 1. ...
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Q.52 Consider the following statements about EMF method of finding the voltage regulation and select the most appropriate option.a. Both open and short circuit data are essential for applying this method.b. The largest value of synchronous ...
Q.48 Which law is used to determine the economic size of a conductor?Ans 1. Kelvin’s law2. Ampere’s law3. Newton’s law4. Gauss’s lawCorrect Ans: 1
Q.42 Which of the following statements about armature reaction of an alternator with unity power factor is NOT true?Ans 1.2.3.4.Correct Ans: 3
Q.46 A resistor of 8 Ω and a capacitor of 178μF are connected in series to a 250V, 50 Hz supply.Net impedance of the circuit is given by 19.6 Ω. What is the value of reactive power?Ans 1. ...
Q.31 Transistor when working in the saturation region acts as _________ and in the cut off region acts as _________.Ans 1. closed switch; amplifier2. open switch; closed switch3. amplifier; open switch4. closed switch; open switchCorrect Ans: 4
Q.35Ans 1. 112 A2. 98 A3. -112 A4. 0 ACorrect Ans: 1
Q.34 Which of the following losses increase due to improper lubrication?Ans 1. Friction losses2. Iron losses3. Copper losses4. Windage lossesCorrect Ans: 1
Q.29 Which of the following statements is true about a parallel RLC circuit?Ans 1. Inductive susceptance will be negative value.2. Capacitive susceptance will be negative value.3. Capacitive susceptance will be zero.4. Inductive susceptance will be zero.Correct Ans: 1
Q.32 According to BIS, the panel board and meter board are to be kept at a height of ________.Ans 1. 1.5 m2. 2.5 m3. 1.2 m4. 1.8 mCorrect Ans: 1
