Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'CHARGEMAN ELECTRICAL/TECHNICIAN GRADE II FOAM MATTINGS INDIA LTD/KCMMF LTD' And exam conducted in the year 2014. And Question paper code was '205/2014'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
28, (111९ core loss in a transformer is constant during
(ಗಿ) quarter load (8) ها تلمط (9) full load )0( 8٥
29. Since transformer is a static device, it has a very high efficiency. What is the normal %
efficiency of a transformer ?
(५) 75-80% (B) 80-85% (©) 85-90% (D) Above 90%
30, . Which of the following speed is called synchronous speed in three phase induction molor 7
(A) Speed of the rotor
(8) Speed of the stator
(C) Speed of the rotating magnetic field
(D) Speed of the flux produced in the rotor
31. When a speed of an induction motor is increased, what will happen to the rotor
frequency ?
(A) Decrease (8) Increase (C) Remain constant (D) Zero
32. What is the main difference in the construction of slipping induction motor as compared to
squirrel cage induction maotor 7 3
(8) The rotor having skewed slots
(B) Rotor is wound with three phase winding and connected in star |
(C) The copper bars are inserted into the rotor slots . |
(D) The ends of the rotor are embedded
33. Which is the cause for a 3 phase induction motor failing to start ?
(^) Incorrect size of fuse (8) High frequency
(C) Stiff bearing (D) किप in ventilation duct
34. What is the effect of single phasing in three phase induction motor ?
(५५) Motor will not run 18) पानी due to ೧೪೮೧೧01101]
(€) No change in running (0) Will make humming noise `
205/2014 6 A
