PGCIL Diploma trainee previous years questions exam

PGCIL Diploma trainee previous years questions 16 / 09/ 2017

Q no 1. Which of the following has non - linear V - I characteristics ?
A ) vacuum diode
B ) filament lamp
C ) transistor
D ) all of the above

explanation

               answer : D ) all of the above

Q no 2. In the left hand rule , thumb always represents
A ) current
B ) voltage
C ) magnetic flux
D ) direction of force on conductor

explanation

               answer : D ) direction of force on conductor

Q no 3. Ferrite cores have less eddy current losses than iron cores because ferrites have
A ) low permeability
B ) high hysteresis
C ) high resistance
D ) all of the above

explanation

               answer : B ) high hysteresis

Q no 4. In a synchronous machine , if the field axis ahead of the armature field axis in the direction of rotation the machine is working as
A ) asynchronous motor
B ) asynchronous generator
C ) synchronous motor
D ) synchronous generator

explanation

               answer : D ) synchronous generator

Q no 5. Typical load always consumes
A ) active power
B ) reactive power
C ) inverse power
D ) none of these

explanation

               answer : A ) active power

Q no 6. Unit for energy transmission under steady state condition is called
A ) static transmission capacity
B ) static distribution
C ) either A and B
D ) none of these

explanation

               answer : C ) either A and B 

Q no 7. Shunt reactors are connected with transmission lines for
A ) limiting fault current
B ) limiting fault voltage
C ) absorbing reactive power
D ) absorbing high voltage surges

explanation

               answer : B ) limiting fault voltage