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Hybrid Parameters Question & Answers

March 21, 2022 By WatElectronics

This article lists 50 Hybrid Parameters MCQs for Engineering Students. All the Hybrid Parameters Questions & Answers given below includes solution and link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the hybrid parameters.

In electronics, the hybrid parameters are very useful in determining some of the amplifier characteristics. The hybrid parameters are represented by a letter h, and these parameters have mixed dimensions, because of mixed dimensions we call this parameter the hybrid parameter. The h parameters are easy to measure, convenient to use in circuit design and analysis, and they are easily convertible from one to another configuration.

It is very useful in determining the input and output impedance as well as the voltage and current gain of the amplifier. The hybrid parameters are easy to measure and convenient to use in circuit analysis and design.

The hybrid models were widely used before the popularity of re-model, re-model is also known as the dynamic emitter resistance model. In the case of the hybrid model, the parameters are defined in general terms for any operating conditions whereas in the case of the re-model the parameters are defined by the actual operating conditions.

These hybrid parameters are very useful during the small-signal analysis of the transistor. The hybrid model is one of the equivalent models of transistors used in the small-signal analysis. The main advantage of the hybrid method is the circuit components are easily available and the procedure is easy to understand and quite simple.

1). How many variables do a two-port network consists of?
HintThe voltage 1 and voltage 2, the current 1 and current 2 are the four variables of two-port network, out of four variables, two or dependent variables and two are independent
2). The two-port network parameters are categorized into __________________ types?
HintThe T, T’, Y, Z, H, and g are two-port network parameters
3). When current I2=0 then the Z parameter Z11 is equal to ratio of ________________?
HintThe Z parameter Z11 is the open circuit input impedance
4). Which one of the following is a driving point impedance equation?
HintThe impedance found at a given port is known as driven point impedance
5). Which one of the following parameters is an open circuit reverse voltage ratio?
HintThe hybrid parameters are easy to measure and convenient to use in circuit analysis and design
6). How many ports does the below figure have?
Two Port Network Representation
HintThe pair of I1 is one port and the pair of I2 is one port
7). Which one of the following is an admittance parameter equation?
HintThe admittance parameters are represented by a letter y
8). Which one of the following is a hybrid parameter or h parameter equation?
HintThe hybrid parameters are represented by a letter h
9). Which one of the following parameters is also known as inverse hybrid parameter?
HintThe G parameters are also known as inverse h parameters or inverse hybrid parameters
10). When current I2=0 then the Z parameter Z21 is equal to ratio of ________________?
HintThe Z parameter Z21 is open circuit transfer impedance from port 2 to port 1
11). Which one of the following equations is an open circuit reverse voltage ratio?
HintThe hybrid parameter h12 is an open circuit reverse voltage ratio
12). The figure shown below is a circuit diagram of ________________ parameters of a simple transistor amplifier?
Hybrid Parameters of a Simple Transistor Amplifier
HintThe h11, h21, h12, and h22 are the hybrid parameters
Read more about Amplifiers
13). Which one of the following is a mathematical expression for current gain?
HintThe ratio of i2 divided by i1 is known as the current gain
14). What is the meaning of hybrid or h parameters and why do we use hybrid parameters?
HintThe h parameters have mixed dimensions, because of mixed dimensions we call this parameter as a hybrid parameter
15). Which one of the following equations in the below figure is a hybrid parameter set?
Parameters Equations
HintThe hybrid parameter set is represented by the letter h where the inverse hybrid parameter is represented by g

Hybrid Parameters MCQs for Quiz

16). The h22 is equal to _______________ in common collector arrangement?
HintIn hoc, the o indicates the nature of the parameter and b indicates the CC arrangement
17). What is the dimension of hybrid or h parameters?
HintThe dimension of hybrid or h parameters is ohms
18). The value of input impedance is equal to _________________ in common emitter arrangement?
HintFor input impedance, the Hie stands for a common-emitter arrangement with output shorted
19). Which one of the following equations in the below figure is an inverse hybrid parameter set?
Parameters Equations
HintThe inverse hybrid parameter set is represented by letter g
20). When current I1=0 then the Z parameter Z12 is equal to ratio of ________________?
HintThe Z parameter Z12 is open circuit transfer impedance from port 1 to port 2
21). What is the meaning of the hybrid parameter h21?
HintThe condition for the h21 hybrid parameter is it is a short circuit forward current ratio
22). Which one of the following equations is a short circuit forward current ratio?
HintThe hybrid parameter h21 is a short circuit forward current ratio
23). The figure shown below is a ________________ connection of two port network?
Cascade Connection of Two Port Network
HintThe parameters Na and Nb are cascaded in the above figure
24). Which one of the following is a mathematical expression for input resistance?
HintThe ratio of v1 divided by i1 is known as the input resistance
25). Which one of the following equations in the below figure is an open circuit impedance parameter set?
Parameters Equations
HintThe impedance parameters are represented by letter z
26). The h12 is equal to _______________ in common base arrangement?
HintIn hrb, the r indicates the nature of the parameter and b indicates the CB arrangement
27). The h21 is equal to _______________ in common base arrangement?
HintIn hfb, the f indicates the nature of the parameter and b indicates the CB arrangement
28). The figure shown below is a hybrid equivalent for _________________ transistor circuit?
Hybrid Equivalent for CB Transistor
HintThe Vbc is the input voltage and ic is the output current
29). Which one of the following is a mathematical expression for voltage gain?
HintThe ratio of v2 divided by v1 is known as the voltage gain
30). When current I1=0 then the Z parameter Z22 is equal to ratio of ________________?
HintThe Z parameter Z22 is the open circuit output impedance

Hybrid Parameters MCQs for Interviews

31). Which one of the following is a driving point admittance equation?
HintThe admittance found at a given port is known as driven point admittance
32). What is the meaning of the hybrid parameter h11?
HintThe condition for h11 hybrid parameter is they are output shorted
33). Which one of the following equations is an open circuit output admittance?
HintThe hybrid parameter h22 is an open circuit output admittance equation
34). The figure shown below is a ________________ connection of two port network?
Parallel Connection of Two Port Network
HintThe parameters Na and Nb are connected parallelly in the above figure
35). Which one of the following is a mathematical expression for output resistance?
HintThe ratio of v2 divided by i2 is known as the output resistance
36). The product of current gain and voltage gain is known as _______________ gain?
HintThe Product of Av and Ai is known as power gain
37). The figure shown below is a hybrid equivalent for _________________ transistor circuit?
Hybrid Equivalent for CC Transistor
HintThe Vbc is the input voltage and ic is the output current
38). The h22 is equal to _______________ in common emitter arrangement?
HintIn hoe, the o indicates the nature of parameter and e indicates the CE arrangement
Read more about Common Emitter Amplifier
39). How many ports does the below figure have?
One Port Network Representation
HintThe pair of I1 is one port, if there is a pair of I2 then the network is said to be two-port network
40). What is the meaning of the hybrid parameter h12?
HintThe condition for h12 hybrid parameters is they are input open

Hybrid Parameters Important MCQs for Exams

41). Which one of the following equations in the below figure is a short circuit admittance parameter?
Parameters Equations
HintThe admittance parameters are represented by letter y
42). The current I1 along with voltage V2 are ______________ in hybrid parameters?
HintThe voltage V1 along with current I2 are dependent variables in hybrid parameters
43). Whats the value of the h11 parameter for the below circuit?
H-Parameter Circuit
HintThe h11=v1/i1 when v2=0, the value of h11 parameter is 15 ohms
44). What are the advantages of using hybrid parameters?
HintThe hybrid parameters are easy to measure, convenient to use in circuit design and analysis and they are easily convertible from one to another configuration
45). The figure shown below is a hybrid equivalent for _________________ transistor circuit?
Hybrid Equivalent for CE Transistor
HintThe Vbc is the input voltage and ic is the output current
46). The hybrid or h parameter of a transistor ________________ if a operating point changes?
HintThe h parameter will change if there is a change in transistor and operating point
47). The h11 is equal to _______________ in common base arrangement?
HintIn hib, i indicates the nature of the parameter and b indicates the CB arrangement
48). The hybrid or h parameter of a transistor ________________ if a temperature changes?
HintThe h parameter will change if there is a change in transistor and operating point
49). The voltage V1 along with current I2 are ______________ in hybrid parameters?
HintThe current I1 along with voltage V2 are independent variables in hybrid parameters
50). The h21 is equal to _______________ in common emitter arrangement?
HintIn hfe, the f indicates the nature of the parameter and e indicates the CE arrangement
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