Electronics

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What type of solids lack symmetry?

Amorphous solids (correct)
Crystalline solids
Pseudo-solids
Super cooled liquids

What is the term for the arrangement of points in space where atoms or molecules of a solid are placed?

Unit cell
Crystal lattice (correct)
Basis
Primitive cell

What is the number of lattice points per primitive cell?

3
4
1 (correct)
2

What is the type of crystal structure where α = β = 90o?

Rhombo-hedral or Trigonal (D) Signup and view all the answers

What is the term for the atoms or molecules attached to every lattice point in a crystal structure?

Basis (D) Signup and view all the answers

What is the bond length in a face-centered cubic lattice?

$\frac{a}{\sqrt{2}}$ (A) Signup and view all the answers

What is the coordination number in a hexagonal close-packed lattice?

12 (C) Signup and view all the answers

What is the number of atoms per unit cell in a hexagonal lattice?

6 (D) Signup and view all the answers

What type of crystal is characterized by anisotropic behavior?

Single crystal (B) Signup and view all the answers

What is the packing fraction in a hexagonal close-packed lattice?

$\frac{\pi}{\sqrt{12}}$ (B) Signup and view all the answers

What is the number of lattices in a cubic crystal system?

1 (A) Signup and view all the answers

What is the angle between lattice constants in a cubic crystal system?

90° (B) Signup and view all the answers

What is the curve drawn between Ic and VCE known as?

Output characteristics (C) Signup and view all the answers

What is the effect of increasing the emitter current Ie on the output characteristics of a CB configuration?

The output characteristics curve shifts to the left (C) Signup and view all the answers

What is the configuration where the emitter is common to both base and collector?

CE configuration (A) Signup and view all the answers

What is the dynamic input resistance of a transistor given by?

Ri = ΔVCB / ΔIE (C) Signup and view all the answers

What is the ratio of the effective alternating component of the output voltage or current to the dc component known as?

Ripple factor (D) Signup and view all the answers

What is the maximum reverse biased voltage that can be applied before commencement of Zener region called?

Peak inverse voltage (D) Signup and view all the answers

What is the value of ripple factor for full wave rectifier?

0.48 (D) Signup and view all the answers

What is the frequency of full wave rectifier ripple frequency?

Twice the input ac frequency (D) Signup and view all the answers

What is the efficiency of the rectifier for a given ripple factor?

40.6% (C) Signup and view all the answers

What is the term for the cloud of electrons that collects around the plate when the plate potential is zero or negative?

Space charge (C) Signup and view all the answers

What is the graph that represents the variation of ip with Vp at a given filament current?

Characteristic curve (B) Signup and view all the answers

What is the type of device that exhibits non-ohmic behavior?

Diode valve (B) Signup and view all the answers

What is the term for the minimum potential required to stop the flow of plate current?

Stopping potential (C) Signup and view all the answers

What is the maximum efficiency of the triode valve when R >> r?

81.2% (C) Signup and view all the answers

What is the graphical representation of ip and Vp at constant Vg known as?

Static plate characteristic curve (D) Signup and view all the answers

What is the slope of the load line represented by?

-2V/RL (B) Signup and view all the answers

What is the intercept of the load line on the Vp axis represented by?

OA (C) Signup and view all the answers

What is the graphical representation of ip and Vp when Vg is kept constant known as?

Static mutual characteristic curve (C) Signup and view all the answers