CSIR Physical Sciences: Questions 234 - 237 of 389

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Question number: 234

» Mathematical Methods of Physics » Finite Difference Methods

Appeared in Year: 2013

MCQ▾

Question

The solution of the differential equation dxdt=x2 with the initial condition x(0)=1 will blow up as t tends to – (June – 2013)

Choices

Choice (4) Response

a.

12

b.

2

c.

1

d.

Question number: 235

» Electronics and Experimental Methods » Device Structure

Appeared in Year: 2013

MCQ▾

Question

The conductor in a 0.75 km long two – wire transmission lines are separated by a centre – to – centre distance of 0.2 m. If each conductor has a diameter of 4 cm, then the capacitance of the line is – (June)

Choices

Choice (4) Response

a.

8.85μF

b.

88.5nF

c.

8.85pF

d.

8.85nF

Question number: 236

» Classical Mechanics » Dynamical System

Appeared in Year: 2014

MCQ▾

Question

The time evolution of one – dimensional system is described by dxdt=(x+1)(x2b2) . If this has one stable and two unstable fixed points, then the parameter b satisfies – (June – 2014)

Choices

Choice (4) Response

a.

0<b<1

b.

b>1

c.

b<1

d.

b=2

Question number: 237

» Electronics and Experimental Methods » A-D and D-a Converters

Appeared in Year: 2013

MCQ▾

Question

A 4 – variable switching function is given by, f=Σ(5, 7,8,10, 13, 15)+d(0, 1,2) ; where d is the do not care condition. The minimized form of f in sum of products (SOP) from is – (Dec– 2013)

Choices

Choice (4) Response

a.

AD+BC

b.

A¯C¯+B¯D¯

c.

AB¯+CD¯

d.

B¯D¯+BD

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