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 'Technician GrII - Electrician - Kerala Co-operative Milk Marketing Federation Ltd' And exam conducted in the year 2020. And Question paper code was '030/2020'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
030/2020
87. What is the secondary induced EMF in a transformer ?
A) Ep = (4.44 x fx No × Om) Volts
8) ನೃ = (4.44 xf x Ng × Om) Volts
௦) يع = (4.44 xf x Ny ಸಲ್ಲಿ) Volts
ع رم ) Volts
p = (4.44 ×× Np x Om
88. What is the working principle of autotransformer ?
A) Mutual induction
B) Faradays laws of electrolysis
C) Flemings left hand rule
D) Self-induction
89. Which condition is correct for parallel operation of transformer ?
A) The same voltage ratio
B) Input voltage must be same
C) The same percentage impedance
0) All the above
90. Which method of cooling is generally adopted for low capacity distribution transformer
up to 100 KVA ?
A) Air blast method
B) Natural air method
C) Oil blast method
D) Forced oil and water cooled method
91. What is the unit of luminous intensity ?
A) Luminous flux
B) Candela
C) Lumen
D) Lux
92. What is the operating temperature of tungsten filament lamp ?
A) 2300°C
B) 2000°C
C) 2700°C
D) 2500°C
A 3