Double helix: Twisted-ladder shape.
Nucleotide: Sugar (deoxyribose) + Phosphate + Nitrogenous base.
Bases: Purines (A, G); Pyrimidines (C, T).
Pairing: A–T (2 H-bonds), C–G (3 H-bonds).
Chargaff’s Rule: A=T, C=G.
Antiparallel strands: 5'→3' and 3'→5'.
Griffith: Transforming factor.
Avery: DNA is transforming factor.
Chargaff: Base pairing rule.
Hershey & Chase: DNA is genetic material.
Franklin & Wilkins:
UNIT-4
1.8.COMPARE BJT AND FET?
| BJT (Bipolar Junction Transistor) | FET (Field Effect Transistor) |
|---|---|
| Current controlled (base current controls collector current) | Voltage controlled (gate voltage controls drain current) |
| Both electrons and holes contribute to current flow | Only majority carriers (electrons in N-channel, holes in P-channel) |
| Moderate input impedance | High input impedance (due to reverse bias on gate) |
| Relatively high power consumption | Relatively |
unit-3
2.Draw the circuit diagram and explain the characteristics of BJT in CB configuration?
Characteristics ot BJT in CB Contiguration
The V-I characteristics of a BJT in the CB configuration describe the relationship
between the voltages and currents at the emitter and collector for various base
currents. These characteristics are divided into input and output characteristics.
1. Input Characteristics (Emitter-Base V-I Characteristics)
These characteristics show the relationship between the emitter
MODULE - I
1. Write a note on the nature of the party system in India since 1990 and its changing trends.
***The Indian party system underwent a significant transformation after 1990. This period
marked the decline of Congress dominance and the emergence of a competitive, fragmented,
and coalition-based party system. The nature of the party system since 1990 can be
understood through changes in structure, ideology, leadership, and voter behaviour.
Decline of One-Party Dominance
Until the
ORGANIZATION THEORY
Study of how orgs function, structure themselves, make decisions, and interact with environment.
ORGANIZATION
Group of people working together to achieve common goals by coordinating resources.
PURPOSE OF ORGANIZATIONS
Achieve goals, create value, produce goods/services, adapt to environment, enable innovation, manage coordination.
TYPES OF ORGANIZATIONS
Profit: profit maximization via goods/services
Non-profit: social/service goals, no profit motive
Government: public service, policy
Q1) WAP that accepts the marks of 5 subjects and finds the Sum and Percentage
#include <stdio.h>
int main()
{
int marks[5];
int total = 0;
float percentage;
for(int i = 0; i < 5; i++)
{
scanf("%d", &marks[i]);
total += marks[i];
}
percentage = (total / 5.0);
printf("Sum: %d\n", total);
printf("Percentage: %2.f%%\n", percentage);
return 0;
}
Q2) WAP that swaps value of two variables
#
1. Define Clipper, and explain clipping at two independent levels?
A.A clipper (also known as a limiter) is an electronic circuit used to remove or "clip" portions
of a signal that exceed a certain threshold voltage level without distorting the remaining
part of the waveform. Clippers are used in various applications, such as signal conditioning,
waveform shaping, and protecting circuits from voltage spikes
Clipping at Two Independent Levels:
Clipping at two independent levels involves limiting
2.4 Leap Year
#include <stdio.h>
int main()
{
int y;
scanf("%d", &y);
if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0)
printf("Leap Year");
else
printf("Not Leap Year");
return 0;
}
2.5 Simple Calculator Using Switch
#include <stdio.h>
int main()
{
char op;
float a, b;
scanf(" %c %f %f", &op, &a, &b);
switch (op)
{
case '+': printf("%.2f", a + b); break;
case '-': printf("%
1. V-I Characteristics of a PN Junction Diode?
A.The voltage-current (V-I) characteristics of a PN junction diode describe
the relationship between the voltage applied across the diode and the resulting
current that flows through it. This relationship is highly nonlinear and is typically'
divided into three regions: forward bias, reverse bias, and breakdown.
Forward Bias Region:In the forward bias region, the positive terminal of the voltage
source is connected to the p-type material, and