# Networks, Signals and Systems [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 43 - 45 of 141

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## Question 43

Appeared in Year: *2019*

### Question

MCQ▾Let H (z) be the z-transform of a real-valued discrete time signal h [n] . If P (z) has a zero z = and P (z) has a total of four zeros, which one of the following plots represents all the zeros correctly? (Carry One Mark Each)

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 44

Appeared in Year: *2010*

### Question

MCQ▾The trigonometric Fourier series for the waveform shown below contains

### Choices

Choice (4) | Response | |
---|---|---|

a. | Only cosine terms and a negative value for the dc components | |

b. | Only sine terms and a negative value for the dc components | |

c. | Only cosine terms and a positive value for the dc components | |

d. | Only cosine terms and zero values for the dc components |

## Question 45

Appeared in Year: *2010*

### Question

MCQ▾If the scattering matrix [S] of a two port network is [S] = then the network is

### Choices

Choice (4) | Response | |
---|---|---|

a. | Lossless and reciprocal | |

b. | Lossless but not reciprocal | |

c. | Not lossless but reciprocal | |

d. | Neither lossless nor reciprocal |