Wave A = 100 sin ?t and wave B = 100 cos ?t. Then rms values of the two waves ar

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Networks Analysis and Synthesis Comments

Question
Wave A = 100 sin ?t and wave B = 100 cos ?t. Then
Options
A. rms values of the two waves are equal
B. rms values of A is more than that of B
C. rms values of A is less than that of B
D. rms values of the two waves may or may not be equal

Correct Answer

rms values of the two waves are equal

Explanation

Since peak values are equal, their rms values are equal irrespective of phase difference.

Networks Analysis and Synthesis problems

Search Results

1. The synthesis of minimum function was suggested by
Options
A. O'Brune
B. R. Richards
C. Bott and Duffin
D. none of the above

2. In an ac circuit, the maximum and minimum values of power factor can be
Options
A. 2 and 0
B. 1 and 0
C. 0 and -1
D. 1 and -1

5. The drift velocity of electrons is
Options
A. very small as compared to speed of light
B. equal to speed of light
C. almost equal to speed of light
D. half the speed of light

6. Which of the following measurements using a dc potentiometer do not require standardisation of potentiometer?
Options
A. Measurement of unknown voltage
B. Measurement of resistance
C. Measurement of unknown current
D. Calibration of voltmeter

7. The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240 x 10^-6 N-m on full scale. If B = 1 Wb/m², range of meter is
Options
A. 1 mA
B. 2 mA
C. 3 mA
D. 4 mA

8. Which of the following are needed both for protection and metering?
Options
A. Wattmeters
B. Instrument transformers
C. Energy meters
D. Power factor meters

9. Figure shows an RC potentiometer to measure ac voltage. It is desired that V₀/V_i should be independent of frequency. The value of C should be
Options
A. 10 ?F
B. 11 ?F
C. 0.1 ?F
D. 0.09 ?F

10. Two resistors R₁ = 36 ? � 5% and R₂ = 75 ? � 5% are connected in series. The total resistance is
Options
A. 111 � 0 ?
B. 111 � 2.778 ?
C. 111 � 5.55 ?
D. 111 � 7.23 ?

Comments

There are no comments.

More in Electronics and Communication Engineering: