Computer Programming MCQs

A. The rectifier will not operate
B. Internal losses will be reduced
C. Both ion and electron streams will move in the same direction
D. The rectifier will operate at reduced efficiency

A. Is directly proportional to load
B. Is inversely proportional to load
C. Varies exponentially with the load current
D. Is almost independent of load current

A. Voltage only
B. Current only
C. Voltage and current
D. R.m.s. value of current

A. it is light in weight and occupies small floor space
B. it has high efficiency
C. it has high overload capacity
D. it is comparatively nosieless

A. Anode is heated
B. Tube is evacuated
C. An auxiliary electrode is used
D. Low mercury vapour pressures are used

A. Expenditure of energy in ionization
B. Surface resistance
C. Expenditure of energy in overcoming the electrostatic field
D. Expenditure of energy in liberating electrons from the mercury

A. 100 a at 100 v
B. 200 a at 200 v
C. 300 a at 300 v
D. 400 a at 400 v

A. its ionization potential is relatively low
B. its atomic weight is quite high
C. its boiling point and specific heat are low
D. it remains in liquid state at ordi¬nary temperature

A. 0.05 v to 0.2 v per cm length of the arc
B. 0.5 v to 1.5 v per cm length of the arc
C. 2 v to 3.5 v per cm length of the arc
D. None of the above

A. Same
B. Less
C. Double
D. Three times