General knowledge (Part-4)

1. Which cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?

1. Glyoxysomes

2. What is the minimum age for election/appointment as member of the Rajya Sabha ?

2. 30 years

3. When milk is churned, how does the cream separate from it?

3. Due to the centrifugal force

Interview Q & A (Part-4)

1.What is fluid ? What is fluid mechanics ?

1.A fluid is a substance which always responses to shear stress and doesn’t have any definite shape. It may or may not have any definite volume.

2.How to determine the characteristics of fluid flow ?

2.By the values of Reynolds Number.

list of Countries and Currencies

List of Countries and Currencies :-

given list of Countries and Currencies in alphabetical order.

Basic maths formulas (Part-1)

list of Algebraic formulas :

• a2 – b2 = (a – b)(a + b)
• (a+b)2 = a2 + 2ab + b2
• a2 + b2 = (a – b)2 + 2ab
• (a – b)2 = a2 – 2ab + b2
• (a + b + c)2 = a2 + b2 + c2 + 2ab + 2ac + 2bc
• (a – b – c)2 = a2 + b2 + c2 – 2ab – 2ac + 2bc
• (a + b)3 = a3 + 3a2b + 3ab2 + b3 ; (a + b)3 = a3 + b3 + 3ab(a + b)
• (a – b)3 = a3 – 3a2b + 3ab2 – b3
• a3 – b3 = (a – b)(a2 + ab + b2)
• a3 + b3 = (a + b)(a2 – ab + b2)
• (a + b)3 = a3 + 3a2b + 3ab2 + b3
• (a – b)3 = a3 – 3a2b + 3ab2 – b3
• (a + b)4 = a4 + 4a3b + 6a2b2 + 4ab3 + b4)
• (a – b)4 = a4 – 4a3b + 6a2b2 – 4ab3 + b4)
• a4 – b4 = (a – b)(a + b)(a2 + b2)
• a5 – b5 = (a – b)(a4 + a3b + a2b2 + ab3 + b4)
• If n is a natural number, an – bn = (a – b)(an-1 + an-2 +…+ bn-2a + bn-1)
• If n is even (n = 2k), an + bn = (a + b)(an-1 – an-2b +…+ bn-2a – bn-1)
• If n is odd (n = 2k + 1), an + bn = (a + b)(an-1 – an-2b +…- bn-2a + bn-1)
• (a + b + c + …)2 = a2 + b2 + c2 + … + 2(ab + ac + bc + ….
• Laws of Exponents(am)(an) = am+n(ab)m = ambm(am)n = amn

Fractional Exponents
a0 = 1
aman=am−n
am$a^m$ = 1a−m




Average formula: 

Let a₁,a₂,a₃,......,a_n be a set of numbers, avera

Physics basic definitions (Part-1)

 Speed :-

              

                 Speed is the rate of change of distance.

 Velocity :-

                  The velocity is the rate of change of displacement.

Acceleration:-

                           

                   The acceleration is the rate of change of the velocity.

Basics

genral knowladge (part-3)

1. Name of the first Atomic Submarine of India ?

1.I.N.S Chakra

2. What is the name of first British to visit India ?

2.Hawkins


3. Name of the first election commissioner of India ?

3.Sukumar Sen.


4. Name of the first university of India ?

4.Nalanda University.

Interview Q & A (part-3)

1. WHAT IS 2-STROKE IC ENGINE?

1.AN 2-STROKE engine is designed by DUGLAD CLERK in 1880, the suction,compression,expansion and exhaust takes place during 2-stroke of piston.Their is 1 stroke after every revolution of the crank shift.

2. WHAT IS 4-STROKE ENGINE?

2.A 4-stroke engine is an internal combustion engine in which the piston completes four separate strokes— intake, compression, power, and exhaust— during two separate revolutions of the engine’s crankshaft, and one single thermodynamic cycle.It uses natural gas,manufactured gas.

strength of material

State – Capitals

List of states and their capitals :

1. Andhra Pradesh – Hyderabad (Proposed Capital: Amaravati in Guntur district. See Note  below.)
2. Arunachal Pradesh –                                  Itanagar
3. Assam –                                                      Dispur
4. Bihar –                                                          Patna
5. Goa –                                                            Panaji
6. Gujarat –                                                      Gandhinagar
7. Haryana –                                                    Chandigarh
8. Himachal Pradesh –                                   Shimla
9. Jammu & Kashmir –                          Srinagar (Winter : Jammu)
10. Karnataka –                                                 Bangalooru
11. Kerala –                                                    Tirubanantapuram
12. Madhya Pradesh –                                        Bhopal
13. Maharashtra –                                              Mumbai
14. Manipur –                                                      Imphal
15. Meghalaya –                                                Shillong
16. Mizoram –                                                     Aizawl
17. Nagaland –                                                  Kohima
18. Orissa –                                                    Bhubaneswar
19. Punjab –                                                      Chandigarh
20. Rajasthan –                                                 Jaipur
21. Sikkim –                                                      Gangtok
22. Tamil Nadu –                                              Chennai
23. Tripura –                                                      Agartala
24. Uttar Pradesh –                                           Lucknow
25. West Bengal –                                            Kolkata
26. Chhattisgarh   –                                            Raipur
27. Uttarakhand     –                                             Dehradun
28. Jharkhand        –                                                Ranchi
29. Telangana          –                                  Hyderabad (see Note below)

(Note: From 2nd June, 2014, The State of Andhra Pradesh has been divided into Telangana and Andhra Pradesh. Hyderabad will remain capital of both the resultant states for 10 years. The proposed capital for the state of Andhra Pradesh is Amaravati in Guntur district.)

Union Territories and National Capital Territory- Capitals

• Delhi (National Capital Territory of Delhi or NCT) –       New Delhi *
• Andaman & Nicobar Islands –                                             Port Blair
• Chandigarh –                                                                       Chandigarh
• Dadra & Nagar Haveli –                                                       Silvasa
• Daman & Diu –                                                                      Daman
• Lakshadweep –                                                                   Kavaratti
• Puducherry –                                                                       Puducherry

Note : In 1991, the constitution vide the 69th amendment, made provisions to make Delhi a special Union Territory. It was declared that the former Union Territory of Delhi would be known as National Capital Territory.

General knowledge (Part-2)

1. Which crop is sown on the largest area in India?

A. Rice

B. Wheat
C. Sugarcane
D. Maize

                                                                    Answer-  A.Rice

2. The value of Gold is determined in

A. Rome
B. Washington
C. Teheran
D. London

                                                                   Answer: D. London

3. The state which has the largest number of sugar mills in India is

A. Bihar
B. Haryana
C. Punjab
D. Uttar Pradesh

                                                                          

                                                                 Answer:D. Uttar Pradesh

general knowledge questions (part-1)

1. Why was the Panchayati Raj System adopted?

1. Decentralise the power of democracy.

2. Which game is Davis Cup associated with?

2.Tennis

3. By whom was the city of Agra founded in 1504? 

3. Sikandar Lodi

4. Which is the State having the largest population of scheduled castes? 

4.Utter Pradesh

5. To whom is the resignation letter of a State Public Service Commission member addressed?

5.Governor

General knowledge Questions

Interview Q & A (Part-2)

1. Explain the second law of thermodynamics.

1.The entropy of the universe increases over time and moves towards a maximum value.

2. What is ferrite?

2.Magnetic iron rock

3. What is the alloy of tin and lead?

3.A tin and lead alloy is commonly called solder. Usually solder is a wire with a rosin core used for soldering. The rosin core acts as a flux.

4. What is gear ratio?

4.It is the ratio of the number of revolutions of the pinion gear to one revolution of the idler gear.

Interview Q & A (Part-1)

1. Materials having lowest cutting speed is a. Cast iron b. Bronze c. Aluminum d. High carbon steel Answer: d. High carbon steel 2. When material is ductile and cutting speed is high, then a. Continuous chips are formed b. Continuous chips with built up edges are formed c. Discontinues chips are formed d. None of these Answer: a. Continuous chips are formed

List of G-codes & M-codes

G-code:

G-code, which has many variants, is the common name for the most widely used numerical control (NC) programming language. It is used mainly in computer-aided manufacturing to control automated machine tools. G-code is sometimes called G programming language, not to be confused with LabVIEW's G programming languageG-code is a language in which people tell computerized machine tools how to make something. The "how" is defined by g-code instructions provided to a machine controller (industrial computer) that tells the motors where to move, how fast to move, and what path to follow.

Lists of G-Codes:

G00 Rapid traverse 

G01 Linear interpolation with feed rate

G02 Circular interpolation (clockwise) 

G03 Circular interpolation (counter clockwise) 

G2/G3 Helical interpolation 

G04 Dwell time in milliseconds 

G05 Spline definition 

G06 Spline interpolation 

G07 Tangential circular interpolation / Helix interpolation / Polygon interpolation / Feedrate interpolation

Introduction of Beam & Types of Beam

Beam

A beam is a structural element that primarily resists loads applied laterally to the beam's axis. Its mode of deflection is primarily by bending. The loads applied to the beam result in reaction forces at the beam's support points. The total effect of all the forces acting on the beam is to produce shear forces and bending moments within the beam.

Basic Terms used in mechanical engineering (part-2)

Boiler/Steam Generator:It is a closed vessel which is made of steel. Its function is to transfer heat to water to generate steam

Economiser:
It is a part of the boiler. Its function is to heat feed water which is supplied to the boiler.

Superheater:
It is a part of the boiler. Its function is to increase the temperature of steam into the boiler.

Air-Preheater:
It is a part of the boiler. Its function is to preheats the air to be supplied to the furnace and it recovers heat from exhaust gas.

strength of material (introduction) part-1

introduction:

The strength of materials may be defined as that branch of engineering science which deals with the ability of various types of materials to resist its failure and their behavior under the action of the forces 

stress:

when some external system of forces or loads act on a body, the internal forces (equal and opposite) are set up at various sections of the body, which resist the external forces . this internal force per unit area at any section of the body is known as unit stress or simply stress. 

Mathematically,

                                    

Turbine & it's types

Turbine:

A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator or producing thrust, as in the case of jet engines.A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels.

Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for the invention of the steam turbine is given both to British engineer Sir Charles Parsons (1854–1931) for the invention of the reaction turbine and to Swedish engineer Gustaf de Laval (1845–1913) for the invention of the impulse turbine. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery.