Q.42 A 220 V 3-phase voltage is applied to a balanced delta connected 3-phase purely resistive load. What is the ratio of reactive power to active power?Ans 1. 0.52. 0.253. 04. 1Correct Ans: 3

Q.39 In a PMMC instrument, swamping resistance is employed to:Ans 1. compensate the error due to high current2. compensate the error due to high voltage3. compensate the error due to strong magnetic field4. compensate the error due to ...

Q.55 MMF is defined as the product of ________.Ans 1. flux and reluctance2. flux and current3. number turns and flux4. number of turns and reluctanceCorrect Ans: 1

Q.17 Which of the following statements about the speed control of DC motors is correct?Ans 1. The field flux control is otherwise called constant power drive method.2. The armature resistance method of speed control is employed to obtain ...

Q.18 Rate should be given for each item of work, separately in words and in figures. In case there is any difference in rates between words and figures, then ________.Ans 1. the highest of the two will be ...

Q.50 Select the correct statement with reference to group Angiosperm.Ans 1. It is a minor group of kingdom Plantae having only 300 species.2. It is the largest and most diverse group in the kingdom Plantae.3. Angiosperm are seedless ...

Q.49 A 10,000 KVA, 3-phase, star-connected 11,000 V, 2-pole turbo generator has the following losses.(i) Open circuit core loss at 11000 V = 80 kW;(ii) Windage and frictional loss = 40 kW;(iii) Full load armature ...

Q.24 Which of the following lamps is used in sports stadiums?Ans 1. Incandescent lamp2. Sodium vapour lamp3. Compact fluorescent lamp4. Ultraviolent lampCorrect Ans: 2

Q.46Ans 1.2.3.4.Correct Ans: 4

Q.21 At unity power factor, armature reaction of an alternator is:Ans 1. distortion of main flux2. magnetising effect3. weakening of main flux4. strengthening of main fluxCorrect Ans: 1