DAE MATH-123

Applied Mathematics-I

Chapter 7 : Phasor Algebra

DAE Common Technologies | First Year

Multiple Choice Questions

Chapter:07 (Phasor Algebra)

Question 1:

The value of \({j^3}E\) is:

jE -jE E -E

Question 2:

The trigonometric form of Z = a + jb is:

|Z|, (cos θ - j sin θ) |Z|, (cos θ + j sin θ) (cos θ + j sin θ) (cos θ - j sin θ)

Question 3:

The trigonometric form of \({e^{-jθ}}\) is:

(cos θ + j sin θ) (cos θ - j sin θ) (cos θ + sin θ) (cos θ - sin θ)

Question 4:

If \(2({cos{60^0}-j sin{60^0}})\) then he exponential form is:

\(2{e^{j{60^0}}}\) \(2{e^{-j{60^0}}}\) \(2{e^{60^0}}\) \(2{e^{-{60^0}}}\)

Question 5:

If \(E({cosθ-j sinθ})\) then he exponential form is:

\(E{e^{jθ}}\) \(E{e^{-jθ}}\) \({e^{jθ}}\) \({e^{-jθ}}\)

Question 6:

The trigonometric form of \({1 + j}{\sqrt{3}}\) is:

\({2(cos{60^0}-j sin{60^0})}\) \({2(cos{30^0}-j sin{30^0})}\) \({2(cos{60^0}+j sin{60^0})}\) \({2(cos{30^0}+j sin{30^0})}\)

Question 7:

The polar form of -1- j is:

\({2{\angle}{225^0}}\) \({-2{\angle}{225^0}}\) \({-{\sqrt{2}}{\angle}{225^0}}\) \({{\sqrt{2}}{\angle}{225^0}}\)

Question 8:

a + jb form of \(2{\angle}{\frac{π}{6}}\) is:

\({1+j}{\sqrt{3}}\) \({1-j}{\sqrt{3}}\) \({\sqrt{3}}+j\) \({\sqrt{3}}-j\)

Question 9:

Z = 1 – j, then arg Z is:

\({45^0}\) \({135^0}\) \({225^0}\) \({315^0}\)

Question 10:

\({Z_1}=8{\angle}-{30^0}\) and \({Z_2}=8{\angle}-{60^0}\), then \({\frac{Z_1}{Z_2}}\) is:

\(4{\angle}{30^0}\) \(4{\angle}{-{30^0}}\) \(4{\angle}{90^0}\) \(4{\angle}{-{90^0}}\)

NOTE
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INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL

PBTE | DAE | MATH-123 APPLIED MATHEMATICS-I | MCQs | Chapter : 07 Phasor Algebra