Modified Characteristics MCQ Questions & Answers

Modified Characteristics MCQs : This section focuses on the "Modified Characteristics". These Multiple Choice Questions (MCQs) should be practiced to improve the Modified Characteristics skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Calculate the active power in a 19 F capacitor.

A. 7.8 W

B. 0 W

C. 5.4 W

D. 1.5 W

Question 2

Calculate the active power in a 241 H inductor.

A. 21 W

B. 11 W

C. 0 W

D. .51 W

Question 3

Calculate the active power in a 41 H inductor.

A. 2 W

B. 1 W

C. 0 W

D. .5 W

Question 4

Calculate the active power in a 5 ? resistor with 5 A current flowing through it.

A. 125 W

B. 110 W

C. 115 W

D. 126 W

Question 5

Calculate the phase angle of the sinusoidal waveform x(t)=20sin(9?t+?÷7).

A. ?÷9

B. ?÷5

C. ?÷7

D. ?÷4

Question 6

Calculate the time period of the waveform y(t)=74cos(81?t+?).

A. .024 sec

B. .027 sec

C. .023 sec

D. .025 sec

Question 7

Calculate the value of the frequency if the inductive reactance is 45 ? and the value of the inductor is 15 H.

A. 0.477 Hz

B. 0.544 Hz

C. 0.465 Hz

D. 0.412 Hz

Question 8

R.M.S value of the trapezoidal waveform V=Vmsin(?t+?).

A. Vm÷2½

B. Vm÷2¼

C. Vm÷2¾

D. Vm÷3½

Question 9

The generated e.m.f from 42-pole armature having 74 turns driven at 64 rev/sec having flux per pole as 21 mWb, with wave winding is ___________

A. 4177.171 V

B. 4177.152 V

C. 4100.189 V

D. 4190.454 V

Question 10

The slope of the V-I curve is 19°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. .3254 ?

B. .3608 ?

C. .3543 ?

D. .3443 ?

Question 11

What is the unit of the admittance?

A. ohm

B. ohm-1

C. ohm2

D. ohm.5