- (A) accelerates
- (B) decelerates
- (C) any of the above
- (D) none of the above
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- (A) The voltage regulation of the rec¬tifier should be low
- (B) In the output circuit there should be no harmonics
- (C) The power factor of the system should be high
- (D) The rectifier supply transformer should be utilized to the best ad-vantage
- (E) all of the above
- (A) resistance
- (B) capacitance
- (C) leakage reactance
- (D) any of the above
- (A) shunt motor
- (B) synchronous motor
- (C) induction regulator
- (D) synchronous generator
- (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) anode is heated
- (B) tube is evacuated
- (C) an auxiliary electrode is used
- (D) low mercury vapour pressures are used
- (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 noiseless
- (E) all of the above
- (A) voltage only
- (B) current only
- (C) voltage and current
- (D) r.m.s. value of current
- (E) none of the above
- (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) 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
