267. If you lose red output of a particular colour system, white elements will
A. look cyan
B. vanish
C. become black
D. none of these

---

268. Three main factors used to distinguish one colour from another are
A. wavelength, luminance and chrominance
B. hue, saturation and sluminance
C. wavelength, hue andsaturation
D. brightness, contrast and wavelength

---

269.  Which of the following expression is wrong?
A. Cyan + Magenta + Yellow = White
B. Red + Green + Blue = White
C. colour subcarrier is precisely 3.58 MHz
D. none of these

---

270. The polarities of I and Q signals for red primary are
A. (+ ye) for 1 and Q both
B. (+ ve) for 1 Q (? ve) for Q
C. (? ve) for I and (+ ye) for Q
D. none of these

---

271. Phase of the red vector with respect to positive (B ? Y) axis is
A.1040
B. 76?
C. 14?
D. none of these

---

272. Phase of the blue vector with respect to positive (B ? Y) axis is
A. 135?
B. 102?
C. 12?
D. none of these

---

273. For positive I and negative Q signals, the resultant lies in the
A. 1st quadrant
B. 2nd quadrant
C. 4th quadrant
D. none of these

---