0--۷۷۸

Correct Answer:- Option-B
Question58:-When a diode is tested using an ohm meter. It indicates the low resistance in both direction. The condition of
1௩௨ 610066 ‏کا‎ ⋅

A:-Open

B:-Short

C:-Leaky

D:-Good

Correct Answer:- Option-B
Question59:-A forward biased diode starts conducting when the applied voltage reaches certain voltage known as

A:-End-in voltage
B:-Barmier voltage

C:-Peak voltage
D:-Saturation voltage
Correct Answer:- Option-B

Question60:-What value of the voltage is obtained directly from the wave form shown on a C.R.0 when connected across
the secondary of a transformer?

A:-Peak value
B:-R.M.S. value
C:-Peak-to-peak value
D:-Average value
Correct Answer:- Option-C
Question61:-The main component used in a ripple filter circuit is the
A:-Capacitor
B:-Resistor

D:-Transformer
Correct Answer:- Option-A
Question62:-The maximum forward current of an LED is about
A:-10 mA
B:-50 mA
6:5۸
D:-1.0A
Correct Answer:- Option-B
Question63:-Which colour LED has the lowest forward voltage drop?
A:-Red
B:-Orange
C:-Green
D:-Yellow
Correct Answer:- Option-A
Question64:-The time taken for etching PCB is in the range of
A:-5 to 20 minutes
B:-20 to 40 minutes
C:-1to 2 hours
D:-More than 2 hour
Correct Answer:- Option-A
Question65:-The PCB side on which components are mounted is referred to as
A:-Copper side
B:-Component side
C:-Solder side
D:-Track side
Correct Answer:- Option-B
Question66:-The chemical used for removing copper from copper clad boards is called

B:-Remover
C:-Eraser
D:-Etchant
Correct Answer:- Option-D
Question67:-In amplifiers, transistors are used for