Basic Electronics concepts

What is "10011010" in decimal system:

• 154

• 156

• 162

• 148

GaAs is which type of semiconductor and it's LEDs emits light in which region?

• Direct band gap, Ultraviolet

• Indirect band gap, Ultraviolet

• Direct band gap, infrared

• Indirect band gap, infrared

Why transistor is called as bi-polar:

• Due to p and n type

• Due to two transistor

• Due to two poles

• Due to holes and electrons as carrier

Identify the op- Amp circuits of figure 1 and figure 2 respectively:

• Integrator, subtractor

• Subtractor, Integrator

• Subtractor, differentiator

• Adder, Subtractor

State whether the statement is correct or incorrect : "Tunnel diode can be used for microwave RF application."

• Correct

• Incorrect

Which diode shows negative resistance region?

• LED

• pn junction diode

• Zener diode

• Tunnel diode

Statement "In Combinational circuits, present output depends upon present input as well as past output.

• False

• True

Which is called a carrier wave?

• Low frequency wave

• High wavelength wave

• High frequency wave

• None of these

Input characteristics of MOSFET is called :

• Direct characteristics

• Drain characteristics

• Indirect characteristics

• Transfer characteristics

Formula for CMRR (Common Mode Rejection Ratio) in Op-Amp is :

Where, Ad= differential gain of the amplifier Ac = common-mode gain of the amplifier

• Ad/Vc

• Ad/Ac

• Ac/Vc

• Vc/Ac