C=Power factor, cos < ۸۷2

D:-Power factor, cos

IR
Correct Answer:- Option-C
Question47:In star connection, Line voltage
AsPhase voltage
B:-V/3 x Phase voltage

(C13 phase voltage

3 X Phase voltage

Correct Answer

1 Option 8
Question48:-Choose the correct answer regarding to the supply system can be produce rotating magnetic 1٤4
‘AsSingle phase alternating supply only
B:-Three phase altemating supply only
Double phase altemating supply only
D:-Both three phase alternating supply and double phase altemating supply
Correct Answer: Option-D
Question49:-In secondary ofa distribution transformers, have their three colls inter connected in connection.
AsStar
B:-Delta
Either star or delta
D:-Neither star nor delta
Correct Answer Option-A
Question50:-What is the most convenient distribution system for electrical energy distribution system, widely used in Kerala State for Domestic Connection ?
‘415/240 V, Three phase three wire system
8:-415/240 V, Three phase four wire system
C415 /240 V, DC two wire system
415/240 V, DC three wire system
Correct Answer: Option-8

‘QuestionS1-The number of diodes requited for a bridge rectifier

Correct Answer:- Option-C
‘QuestionS2:-The process of conversion AC to DC is called
As-Filtering
B:-Rectification
ലി
D:-Amplification
Correct Answer:- Option-B
Question53:-Zener diode is mostly used as
AzLed
B:-Full wave rectifier
Ci-Half wave rectifier
D:-Voltage regulator
Correct Answer:- Option-D
QuestionS4:-The advantage of a FET is
AzLower gain
B:-Higher noise
C+High input impedance
D:-Low input impedance
Correct Answer:- Option-C
(१८९७०१55 JFET can operate in
A= Depletion mode only
B:-Enhancement mode only
C=Depletion and enhancement modes

D:-Vibrating mode