CRO – 1 – 2

6. A dual-trace CRO has :

(a) One-vertical and one horizontal amplifier
(b) Two vertical and one horizontal amplifier
(c) One vertical and two horizontal amplifier
(d) Two vertical and two horizontal amplifiers

ANSWER

EXPLANATION

7. A CRO can display :

(a) AC signals
(b) DC signals
(c) Both AC and DC signals
(d) Time-invariant signals

ANSWER

EXPLANATION

8. The  X- and Y- inputs of a CRO are respectively Vsinωt and -Vsinωt. The resulting Lissajous pattern will be :

(a) a straight line
(b) a circle
(c) an elipse
(d) a figure of eight

ANSWER

EXPLANATION

9. The deflection sensitivity of a CRT depends in versely on the :

(a) lenght of the vertical deflecting plates
(b) distance between screen and defecting plates
(c) defecting volatge
(d) separation between Y- plates

ANSWER

EXPLANATION

10. A dual – trace CRO has :

(a) one electron gun
(b) two electron guns
(c) one electron gun and two- pole switch
(d) two electron guns and two- pole switch

ANSWER

EXPLANATION

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