Q46: What is the fundamental frequency of a signal given by: x(t) = 3 + 4...

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Q46: What is the fundamental frequency of a signal given by: x(t) = 3 + 4 cos (4000 t) + 3 sin (4000 t) -2 cos (8000t) + 3 sin (8000 t) + cos (12000 t) -sin (12000 t) (b) 2,000 Hz (c) 4,000 Hz (a) 1,000 Hz O a. O b. O c. O d. O e. QUESTION 47 Q47: What is the sum of the 1st and 3rd harmonic frequencies of a signal given by: x(t) = 3 + 4 cos (4000zt) + 3 sin (4000zt) 2 cos (8000 rt) + 3 sin (8000) + cos (12000zt) - sin (12000zt) (a) 4,000 Hz (b) 12,000 Hz (c) 20,000 Hz O a. O b. O c. O d. O e. (d) 8,000 Hz (a) 4 kHz O a. O b. O c. O d. Oe. (d) 16,000 Hz (e) 16,000 Hz QUESTION 48 Q48. What is the sum of the 2nd and 4th harmonic frequencies of a signal given by: x(t) = 3 + 4 cos (4000 t) + 3 sin (4000 t) -2 cos (8000 zt) + 3 sin (8000t) + cos (12000zt) - sin (12000zt) -0.5 cos (16000zt) + 3 sin (16000z t) (b) 8 kHz (c) 12 kHz (d) 16 kHz (e) 8,000 Hz (e) 20 kHz Q46: What is the fundamental frequency of a signal given by: x(t) = 3 + 4 cos (4000 t) + 3 sin (4000 t) -2 cos (8000t) + 3 sin (8000 t) + cos (12000 t) -sin (12000 t) (b) 2,000 Hz (c) 4,000 Hz (a) 1,000 Hz O a. O b. O c. O d. O e. QUESTION 47 Q47: What is the sum of the 1st and 3rd harmonic frequencies of a signal given by: x(t) = 3 + 4 cos (4000zt) + 3 sin (4000zt) 2 cos (8000 rt) + 3 sin (8000) + cos (12000zt) - sin (12000zt) (a) 4,000 Hz (b) 12,000 Hz (c) 20,000 Hz O a. O b. O c. O d. O e. (d) 8,000 Hz (a) 4 kHz O a. O b. O c. O d. Oe. (d) 16,000 Hz (e) 16,000 Hz QUESTION 48 Q48. What is the sum of the 2nd and 4th harmonic frequencies of a signal given by: x(t) = 3 + 4 cos (4000 t) + 3 sin (4000 t) -2 cos (8000 zt) + 3 sin (8000t) + cos (12000zt) - sin (12000zt) -0.5 cos (16000zt) + 3 sin (16000z t) (b) 8 kHz (c) 12 kHz (d) 16 kHz (e) 8,000 Hz (e) 20 kHz