MA8351 Important Questions Discrete Mathematics

MA8351 Important Questions Discrete Mathematics Regulation 2017 Anna University free download. Discrete Mathematics Important Questions MA8351 pdf free download.

Sample MA8351 Important Questions Discrete Mathematics:

1. The Handshaking Theorem
Let G = (V, E) be an undirected graph with ‘e’ edges. Then vV
deg(v) = 2е
The sum of degrees of all the verticies of an undirected graph is twice the number of edges of
the graph and hence even.
Proof: MA8351 Important Questions Discrete Mathematics
Since every edge is incident with exactly two vertices, every edges contributes 2 to the sum of
the degree of the vertices.
All the ‘e’ edges contributes (2e) to the sum of the degrees of vertices.
deg(v) = 2e
2. Draw the graph with 5 vertices, A, B, C, D, E such that deg(A) = 3, is an odd vertex, deg (C)
= 2 and D and E are adjacent. MA8351 Important Questions Discrete Mathematics
Solution:
d(E) = 5
d(C) = 2
d(D) = 5
d(A) = 3
d(B) = 1
3. In an undirected graph, the numbers of odd degree vertices a re even.
Proof: MA8351 Important Questions Discrete Mathematics
Let V1 and V2 be the set of all vertices of even degree and set of all v ertices
of odd degree, respectively, in a graph G= (V, E).

Therefore, d(v)= d(vi)+ d(vj)
By handshaking theorem, we have
Since each deg (vi) is even, is even.
As left hand side of equation (1) is even and the first expression on the RHS of (1) is
even, we have the 2nd expression on the RHS must be even.
Since each deg (vj) is odd, the number of terms contained in i.e., The number of
vertices of odd degree is even. MA8351 Important Questions Discrete Mathematics
4. If the simple graph G has 4 vertices and 5edges, then how many edges does Gc have?
Solution:
( ) c E GG =
2
 ( 1)
E(G) + ( ) c E G =
2
 ( 1)
e+ ( ) c E G =
2
 ( 1)
( ) c E G =
2
 ( 1)
 Gc has
2
 ( 1)
– e edges
 Gc have
2
4(4 1)
– 5 = 6 – 5 = 1 edges.
5. How many edges are there in a graph with ten vertices each of degree six.
Solution: MA8351 Important Questions Discrete Mathematics
Let e be the number of edges of the graph.
2e = Sum of all degrees
 = 10*6 = 60.
 2e = 60 e = 30. There are 30 edges.

Subject name	Discrete Mathematics
Semester	3
Subject Code	MA8351
Regulation	2017 regulation

MA8351 Important Questions Discrete Mathematics Click Here To Download 

MA8351 Syllabus Discrete Mathematics

---

MA8351 Notes Discrete Mathematics

---

MA8351 Questions Bank Discrete Mathematics

 

CS8351 Important Questions Digital Principles and System Design

CS8351 Important Questions Digital Principles and System Design Regulation 2017 Anna University free download. Digital Principles and System Design Important Questions CS8351 pdf free download.

Sample CS8351 Important Questions Digital Principles and System Design:

PART-A (2 Marks) CS8351 Important Questions Digital Principles and System Design

1.What is the use of state diagram?
2. What is state table?
3. What is a state equation?
4. Differentiate ASM chart and conventional flow chart?
5. What is flow table?
6. What is primitive flow table?
7. Define race condition.
8. Define critical & non-critical race with example.
9. How can a race be avoided?
10. Define hazards.

PART-B CS8351 Important Questions Digital Principles and System Design

1. Design an Asynchronous sequential circuit using SR latch with
two inputs A and B and one output y. B is the control input which, when equal to 1, transfers the input A to output y. when B is 0, the output does not change, for any change in input. (16)
2. Give hazard free relation for the following Boolean function.
F (A, B, C, D) =_m (0, 2, 6, 7, 8, 10, 12) (16)
3. Explain about Hazards? (16)
4. Explain about Races? (16)
5. Design T Flip flop from Asynchronous Sequential circuit? (16)

PART-A (2 Marks) CS8351 Important Questions Digital Principles and System Design

1. What is sequential circuit?
2. List the classifications of sequential circuit.
3. What is Synchronous sequential circuit?
4. List different types of flip-flops.
5. What do you mean by triggering of flip-flop.
6. What is an excitation table?
7. Give the excitation table of a JK flip-flop
8. Give the excitation table of a SR flip-flop
9. Give the excitation table of a T flip-flop

PART-B CS8351 Important Questions Digital Principles and System Design

1. Design a counter with the following repeated binary sequence:0,
1, 2,3, 4, 5, 6.
use JK Flip-flop. (16)
2. Describe the operation of SR flip-flop (16)
3. Design a sequential circuit using JK flip-flop for the following
state table [use state
diagram] (16)
4. The count has a repeated sequence of six states, with flip flops B
and C repeating the
binary count 00, 01, 10 while flip flop A alternates between 0 and 1
every three counts.
Designs with JK flip-flop (16)
5. Design a 3-bit T flip-flop counter (16)

Subject name	Digital Principles and System Design
Semester	3
Subject Code	CS8351
Regulation	2017 regulation

CS8351 Important Questions Digital Principles and System Design Click Here To Download 

CS8351 Syllabus Digital Principles and System Design

---

CS8351 Notes Digital Principles and System Design

---

CS8351 Question Bank Digital Principles and System Design

 

ME8792 Important Questions POWER PLANT ENGINEERING

ME8792 Important Questions POWER PLANT ENGINEERING Regulation 2017 Anna University free download. POWER PLANT ENGINEERING Important Questions ME8792 pdf free download.

ME8792 Important Questions POWER PLANT ENGINEERING:

23. Write the De-merits at steam jet draught?
1. It can be operated only when the steam is raised
2. The draught produced is very low

24. Define Condenser?
A condenser is a device in which the steam is condensed by cooling it with water. The
condensed steam is known as condensate.

25. Write the essential elements of a steam condensing plant?
1. A closed vessel in which the steam is condensed.
2. A pump to deliver condensed steam to the hot well from the condenser.
3. A dry air-pump to remove air and other non-condensable gases,
4. A feed pump to deliver water to the boiler from hot well. ME8792 Important Questions Power Plant Engineering

26. What are the sub division of jet condensers?
1. Low level counter flow jet condenser
2. High level (or) Barometric jet condenser
3. Ejector condenser.

27. Write the surface condenser?
1. Down flow condenser
2. Central flow condenser
3. Evaporative condenser ME8792 Important Questions Power Plant Engineering

28. Write the advantages of surface condenser?
1. The condensate can be used as boiler feed water
2. Cooling water of even poor quality can be used because the cooling water does not come in
direct contact with steam
3. High vacuum (about 73.5 cm of Hg) can be obtained in the surface condenser. This
increases the thermal efficiency of the plant.

29. Write the disadvantages of surface condenser?
1. The capital cost is more,
2. The maintenance cost and running cost of this condenser is high,
3. It is bulky and requires more space.

30. Name any two heat saving devices used in a thermal power plant?
1. Air pre heater
2. Economizer. ME8792 Important Questions Power Plant Engineering

1.1 Working of thermal power plant
Layout of steam power plant:
Introduction:
Steam is an important medium for producing mechanical energy. Steam is used to drive ME8792 Important Questions Power Plant Engineering
steam engines and steam turbines. Steam has the following advantages.
1. Steam can be raised quickly from water which is available in plenty.
2. It does not react much with materials of the equipment used in power plants.
3. It is stable at temperatures required in the plant.

Subject name	POWER PLANT ENGINEERING
Semester	3
Subject Code	ME8792
Regulation	2017 regulation

ME8792 Important Questions POWER PLANT ENGINEERING Click Here To Download 

 ME8792 Syllabus POWER PLANT ENGINEERING

---

ME8792 Notes POWER PLANT ENGINEERING

---

ME8792 Question Bank POWER PLANT ENGINEERING

EC8353 Important 16 Mark Questions Electron Devices and Circuits

EC8353 Important 16 Mark Questions Electron Devices and Circuits Regulation 2017 Anna University free download. Electron Devices and Circuits Important 16 Mark Questions EC8353 pdf free download.

Sample EC8353 Important 16 Mark Questions Electron Devices and Circuits:

1. Describe the methods of determination of h-parameters from its static Input and output characteristics.
(8)
2. Draw and explain the h-parameter equivalent circuit of a transistor in CC configuration. derive the
expressions for input impedance ,output impedance, voltage gain and current gain (16) EC8353 Important 16 Mark Questions Electron Devices and Circuits
3. Explain the switching characteristics of a transistor with neat sketch. (10)
4. Describe the static input and output characteristics of CB configuration of a transistor with neat circuit
diagram. (16)
5. Derive the expression for current gain, input impedance and voltage gain of a CE Transistor Amplifier.
(16) EC8353 Important 16 Mark Questions Electron Devices and Circuits
6. Draw the circuit for determining the transistor common base characteristics and explain how the
characteristics are measured and draw the graphs. (16)
7. For a common emitter circuit draw the h-parameter equivalent circuit and write the expressions for EC8353 Important 16 Mark Questions Electron Devices and Circuits
input impedance, output impedance and voltage gain. (16)
8. Explain the midband analysis of single stage CE, CB and CC amplifiers. (16)
9. Explain the analysis of low frequency response of RC coupled amplifiers. (16)
10. Compare the characteristics of the different configurations of BJT amplifiers.(8) EC8353 Important 16 Mark Questions Electron Devices and Circuits
11. Draw and explain the hybrid π model of a CE configuration of a transistor and derive the necessary expressions.(16)
12. Draw and explain the h-parameter equivalent circuit of a transistor in CE configuration. derive the EC8353 Important 16 Mark Questions Electron Devices and Circuits
expressions for input impedance ,output impedance, voltage gain and current gain (16)

Subject name	Electron Devices and Circuits
Semester	3
Subject Code	EC8353
Regulation	2017 regulation

EC8353 Important 16 Mark Questions Electron Devices and Circuits Click Here To Download 

EC8353 Syllabus Electron Devices and Circuits

---

EC8353 Notes Electron Devices and Circuits

---

EC8353 Question Bank Electron Devices and Circuits

EC8353 Important Questions Electron Devices and Circuits

EC8353 Important Questions Electron Devices and Circuits Regulation 2017 Anna University free download. Electron Devices and Circuits Important Questions EC8353 pdf free download.

Sample EC8353 Important Questions Electron Devices and Circuits:

1. Define Knee Voltage of a diode

The minimum voltage at which the diode starts conducting and current starts increasing Exponentially is called knee voltage of a diode.

2. What is peak inverse voltage

In reverse biased, opposite polarity voltage appears across diode. The maximum voltage which diode can withstand without breakdown is called peak inverse voltage. EC8353 Important Questions Electron Devices and Circuits

3. Differentiate drift and diffusion current

When a voltage is applied to a material, the free electrons move towards the positive of the battery.
While moving them collide with the adjacent atoms and keep changing their directions randomly.
In case of diffusion current, the external voltage is not required.

4. What is a PN Junction diode

There are two electrodes each from p-type and n-type materials and due to these two electrodes; the device is called a diode. It conducts only in one direction.

6. What are the advantages of bridge rectifier over its centre tapped counterpart?

No centre tap is required in the transformer secondary. Hence, wherever possible a.c Voltage can be directly applied to the bridge.

Due to pure alternating current in secondary of transformer, the transformer gets utilized effectively. EC8353 Important Questions Electron Devices and Circuits

7. What is meant by dynamic resistance of diode

The resistance offered by the p-n junction diode under a.c condtions is called dynamic resistance of diode.

10. What are the advantage and limitations of LCD Displays

-Less power consumption is the advantage of LCD displays.
-Poor reliability is the limitation of LCD Display. EC8353 Important Questions Electron Devices and Circuits

11. Define static and dynamic resistance of a PN diode.

The forward resistance of p-n junction diode when p-n junction is used in d.c
Circuit and the applied forward voltage is d.c. is called static resistance
The resistance offered by the p-n junction diode under a.c. conditions is called
dynamic Resistance of diode. EC8353 Important Questions Electron Devices and Circuits

Subject name	Electron Devices and Circuits
Semester	3
Subject Code	EC8353
Regulation	2017 regulation

EC8353 Important Questions Electron Devices and Circuits Click Here To Download 

EC8353 Important 16 Mark Questions Electron Devices and Circuits

---

EC8353 Syllabus Electron Devices and Circuits

---

EC8353 Notes Electron Devices and Circuits

---

EC8353 Question Bank Electron Devices and Circuits

EE8301 Important 16 Mark Questions Electrical Machines 1

EE8301 Important 16 Mark Questions Electrical Machines 1 Regulation 2017 Anna University free download. Electrical Machines 1 Important 16 Mark Questions EE8301 pdf free download.

Sample EE8301 Important 16 Mark Questions Electrical Machines 1

Unit – 1 EE8301 Important 16 Mark Questions Electrical Machines 1

1. Explain (a)leakage flux( b)stacking factor (c) air gap. (8)

2. Explain the core losses that occurs in magnetic circuits in detail. (8*)

3. Compare magnetic circuits and electric circuits (8)*

4. Explain in detail how the emf is induced . (16)*

5. Explain AC operation of magnetic circuits and derive the energy stored in magnetic field .(8)*

Unit -2 EE8301 Important 16 Mark Questions Electrical Machines 1

1. Draw and explain the equivalent circuits of transformer (16)

2. Explain the working and construction of auto transformer in detail.(8)

3. Explain parallel operation of single phase transformer. And derive the emf equation of transformers. (16)*

4. Explain a)transformer on ON load b)transformers on NO load conditions. (Each 8 )

5. Explain all the three phase transformer connections . (16)*

Unit -3 EE8301 Important 16 Mark Questions Electrical Machines 1

1. Explain in detail multiply (or) doubly excited magnetic system .(16)*

2. Explain in detail singly excited magnetic system (be in knowledge with full derivation in safer side ) .(16)*

Unit -4 EE8301 Important 16 Mark Questions Electrical Machines 1

1. Explain MMF in a multiple coil distributed winding (16)*

2. Explain MMF in single coil winding .(8)*

3. Explain generated voltage in AC and DC machines. (16)*

4. Explain and derive the torque in round rotor machines in terms of flux and flux density.(16)

Unit -5 EE8301 Important 16 Mark Questions Electrical Machines 1

1. Explain the process of commutation and the methods to improve the commutations .(16)*

2. Explain the methods speed control of DC shunt motor. (8)*

3. Explain in detail the armature reaction in the DC machines. (16)*

4. Explain the methods speed control of DC series motor.(8)

5. Explain the three point starter in detail with diagram .(8)

6. Explain any 2 methods of testing of DC machines .(8)*

7. Explain the methods of excitation in DC generators (16)*

8. Explain characteristics of DC generator.(16)*

Subject name	Electrical Machines 1
Semester	3
Subject Code	EE8301
Regulation	2017 regulation

EE8301 Important 16 mark Questions Electrical Machines 1 Click Here To Download 

EE8301 Syllabus Electrical Machines 1

---

EE8301 Notes Electrical Machines 1

---

EE8301 Question Bank Electrical Machines 1