In the case of class A amplifiers, the ratio of efficiency of transfor – McqOptions

MCQOPTIONS

1.	In the case of class A amplifiers, the ratio of efficiency of transformer coupled amplifier to the efficiency of a transformerless amplifier is
A.	0.5
B.	1
C.	1.36
D.	2
Answer» E.

Discussion

No Comment Found

Related MCQs

In class A operation of an amplifier the current flows through the active device for
A transformer coupled class A amplifier drives a 16 Ohm loud speaker through 4 : 1 transformer with Vcc = 36 V. If the circuit delivers 2 Watts to load, the rms voltage across the load assuming transformer efficiency as 100% is
In an amplifier, the output current flows for 200° of input cycle. The class of operation of the amplifier is
Class C amplifier operates
High power amplification is achieved by the use of
In a cell phone, a power amplifier delivering 1 W to the antenna may pull several watts from the battery. If the power conversion efficiency is 30%, then the above cellphone translates to a power drain of:
In the circuit shown below, the maximum power dissipated by Rs if input varies from 15 V to 20 V (assuming Zener diode used is 10 V, 2W) is?
For a class-A FET power amplifier with 10 V drain supply and 2 A drain current bias providing RF load current of 1 A amplitude. What is the DC to RF efficiency for load resistance of 5 Ω?
In class B amplifier, the output current flows for
Consider the following circuits:1. Oscillator2. Emitter follower3. Power amplifierWhich of the above circuits employ feedback?