- (A) increasing core length
- (B) decreasing the number of turns
- (C) decreasing the diameter of the former
- (D) choosing core material having high relative permeability
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- (A) ratio of net reactance and impedance
- (B) ratio of kW and kVA
- (C) ratio of J and Z
- (D) ratio of W and VA
- (A) current
- (B) voltage
- (C) power
- (D) frequency
- (A) create more electrical noise
- (B) are likely to melt under excessive eddy current heat
- (C) consume more power
- (D) exhibit unwanted inductive and capacitive effects
- (A) can dissipate considerable amount of power
- (B) can act as energy storage devices
- (C) connecting them in parallel in¬creases the total value
- (D) oppose sudden changes in voltage
- (A) a line which represents the magnitude and phase of an alternating quantity
- (B) a line representing the magnitude and direction of an alternating quantity
- (C) a coloured tag or band for distinction between different phases of a 3-phase supply
- (D) an instrument used for measuring phases of an unbalanced 3-phase load
- (A) reactive power in a circuit
- (B) the extent of neutralisation of reactive power in a circuit
- (C) a purely capacitive circuit’s ability to pass current
- (D) a purely capacitive circuit’s ability to resist the flow of current
- (A) 0°
- (B) 45°
- (C) 90°
- (D) 180°
- (A) lags
- (B) leads
- (C) remains in phase with
- (D) none of the above
- (A) The current through each element is same
- (B) The voltage across element is in proportion to it’s resistance value
- (C) The equivalent resistance is greater than any one of the resistors
- (D) The current through any one element is less than the source current
