NPCIL Stipendiary Trainee Maintainer Electronics Advanced Paper | NPCIL Stipendiary Trainee Electronics Category II (ST/TM) Paper 2019 at Rawatbhat Rajasthan Site
We require a resistor of 47 k Ohm with +/-10% tolerance. The sequence of colour band on this resistor would be _________
(a) Yellow, violet, orange & Silver
(b) Yellow, brown, orange & Silver
(c) Yellow, violet, orange & gold
(d) Yellow, viiolet, brown & gold
How many diodes are required in full wave bridge rectifier ?
(a) 1
(b) 2
(c) 4
(d) 8
The base of a transistor is ________doped.
(a) heavily
(b) moderately
(c) lightly
(d) None of these
The most commonly used semiconductor element is ____________
(a) Cu
(b) Al
(c) C
(d) Si
Amplification factor of a circuit is 50. To make it oscillator, feedback factor should be _____________
(a) 50
(b) 1/50
(c) 100
(d) 1/100
Which among the following factors affected the output voltage of an un-regulated power supply ?
(a) Load current
(b) Input voltage
(c) Both (a) & (b)
(d) None of these
In an intrinsic Semiconductor, number of holes will be equal to number of _________
(a) proton
(b) free electron
(c) neutron
(d) None of these
In a transistor, the base current is about __________% of emitter current
(a) 5
(b) 20
(c) 30
(d) 50
When transistors are used in digital circuits they usually operate in the __________region
(a) active
(b) breakdown
(c) saturation and cut-off
(d) Linear
Zener diode is commonly used as __________
(a) Current Source
(b) Amplifier
(c) Rectifier
(d) Voltage regulator
In a P-N-P transistor, the current carriers are ___________
(a) donor ions
(b) acceptor ions
(c) free electrons
(d) holes
To carry a current of 0.3 ampere in a 100 ohm resistor you will require a resistance of 100 Ohm, __________Watt.
(a) 3
(b) 10
(c) 5
(d) 1
Which is not an active component ?
(a) Transistor
(b) SCR
(c) Triac
(d) Resistor
Memory that loses its contents when power supply is lost is known as ____________memory.
(a) static
(b) random
(c) volatile
(d) non-volatile
Leave a Reply