All Exams Test series for 1 year @ ₹349 only
Question

What is the configuration called when the emitter terminal of a transistor is common to both input and output circuits?

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is

Common emitter

The question pertains to the configurations of a transistor which are based on which terminal is common to both the input and output circuits. Let's discuss the provided options to understand the correct answer:

  1. Common base: In this configuration, the base terminal is common to both the input and output circuits. It is characterized by high voltage gain but low current gain.
  2. Emitter follower (Common collector): Here, the collector terminal is common. It is also known as an emitter follower due to the voltage across the emitter following the input voltage.
  3. Common emitter: This is the most popular configuration where the emitter terminal is common to both input and output circuits. It provides both voltage and current gain and is widely used in amplification.
  4. Common collector: This is another term for the emitter follower configuration.

Therefore, the correct answer is Common emitter. This configuration has the emitter terminal connected to both input and output circuits, making it a potent choice for amplification due to its gain characteristics.

Was this answer helpful?

Similar Questions

  1. Identify the component shown in the image below:

  2. The emitter current of a transistor is 1 mA. If 1% of the emitted current carriers are lost in the base recombination, what is the value β? Identify from the given options.

  3. Heat sink of a power transistor can be used for:

  4. In case of an AC input signal in CE Transistor Load line can be given by a plot of

  5. How does the construction of a MOSFET help to achieve high input impedance?

  6. While diagnosing an NPN BJT in a SOT-23 package, your multimeter positive probe (+) is locked on the Base (Pin 1). Measuring to Pin 3 reads 0.6 V, while measuring to Pin 2 reads 0.68 V. Which pin is the Emitter?

  7. Which type of charge carriers mainly control current in a Field Effect Transistor (FET)?

  8. What is the purpose of the base region in an NPN transistor?

  9. Why are transistors preferred over mechanical switches for rapid switching operations?

  10. In the output characteristics of a common-emitter configuration, a family of curves is obtained by varying VCE while keeping which quantity fixed? (Symbols have their usual meaning.)


Important Questions from Transistors

  1. A transistor has ______ PN junctions

  2. Which of the following is not true for a BJT?

  3. A transistor amplifier with proper biasing has the following measured parameters:

    Input resistance = 1 kΩ, Output resistance = 10 kΩ, Current gain = 90.

    Identity the biasing configuration.

  4. The change of output wave shape from the input wave shape of an amplifier is known as

  5. Identify the component shown in the image below:

Need Expert Advice?
Upcoming Exams
RRB JE
October 27, 2026
RRB ALP
November 03, 2026
Test Series
RRB ALP img
Railways
RRB ALP 2026 Mock Test series
1035 Tests 1 Tests Free
1315 Attempts
4.3(246)
English, Hindi

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App