Other Engineering Answers

prove that 4sin3a.cos 3a + 4 cos 3a.sin 3a = 3 sin 4a

What are sequential circuits? Explain differences between
sequential circuits and combinational circuits

Simplify the following Boolean function:
F = A’C + A’B + AB’C + BC, using K-map?

Expand the following Boolean functions into their canonical form:
i. f(X,Y,Z)=XY+YZ+ X Z+ X Y
ii. f(X,Y,Z)=XY+ X Y + X YZ

Answer the following questions for the function f(x)= (x^3)/(x^2-9) defined on the interval [-17,15]. Enter points, such as inflection points in ascending order, i.e. smallest x values first.
A. The function f(x) has vertical asymptotes? (2 of them)
B. f(x) is concave up on the region () to () and () to ().
C. The inflection point for this function is?

Explain the following terms with the reference to definitions in BS 5839-1

1.addressable fire alarm system
2.conventional fire alarm system
3. two state detector
4. analogue detector
5. pre-alarm warning
6. staff alarm

Explain what is meant by diffusion and premixed flames

Describe clearly the difference between detonation and deflagration

how a four stroke petrol engine is made and also explain it's working along with the working of supercharger?

hi...
i am studying in 12th std.
i want to ask question about which engineering is best mechanical ya civil plz suggest me which course i will chose.
nd my dad is also civil engineer...so suggest me plz