Related Questions

A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will ___________
A remain the same
B increase
C decrease
D none of the above
The phase difference between the input and output voltages of a transistor connected in common collector arrangement is ___________
A 0°
B 90°
C 180°
D 270°
In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of
A Shunt motor
B Synchronous motor
C Induction regulator
D Synchronous generator
The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
A $$\frac{{\text{E}}}{2}$$
B 2E
C Slightly less than E
D E
A separately excited generator as compared to a self-excited generator
A Is amenable to better voltage control
B Is more stable
C Has exciting current independent of load current
D Has all above features
Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator?
A Dummy coils
B Commutator
C Eye bolt
D Equalizer rings
The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator?
A Hysteresis loss
B Field copper loss
C Armature copper loss
D Eddy current loss
The phase difference between the input and output voltages in a common base arrangement is ___________
A 180°
B 90°
C 270°
D 0°
The phase difference between the output and input voltages of a CE amplifier is ___________
A 180°
B 0°
C 90°
D 270°
Polyphase is characterized by two or more sinusoidal voltages, each having a different phase angle.
A True
B False

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