# Exam Questions Papers - Exam Paper 1 Online Exam Quiz

Exam Questions Papers - Exam Paper 1 GK Quiz. Question and Answers related to Exam Questions Papers - Exam Paper 1. MCQ (Multiple Choice Questions with answers about Exam Questions Papers - Exam Paper 1

### In the following non planar graph number of independent loop equations are

**Options**

A : 8

B : 12

C : 7

D : 5

### A transmission line has a characteristic impedance of 50 ? and a resistance of 0.1 ?/m, if the line is distortion less, the attenuation constant (in Np/m) is

**Options**

A : 500

B : 5

C : 0.014

D : 0.002

### A certain 8 bit uniform quantization PCM system can accommodate a signal ranging from - 1 V to + V. The rms value of the signal is V . The signal to quantization noise ratio is:

**Options**

A : 30 dB

B : 46.91 dB

C : 40 dB

D : 49.92 dB

### A rectangular waveguide, in dominant TE mode, has dimensions 10 cm x 15 cm . The cut off frequency is

**Options**

A : 10 GH z

B : 1 GH z

C : 15 GH z

D : 25 GH z

### A radar receiver has a noise figure of 10 dB at 300 K having a bandwidth of 2.5 MHz. The minimum power it can receive is

**Options**

A : 3.45 x 10 -15 W

B : 1.38 x 10 -15 W

C : 7.5 x 10 -15 W

D : 93.15 x 10 -15 W

### In the circuit shown, in switch S is open for a long time and is closed at t = 0. The current i ( t ) for t ? 0 + is

**Options**

A : i ( t ) = 0.5 - 0.125 e -1000 t A

B : i ( t ) = 1.5 - 0.125 e -1000 t A

C : i ( t ) = 0.5 - 0.5 e -1000 t A

D : i ( t ) = 0.375 e -1000 t A

### In a semiconductor material. The hole concentration is found to be 2 x 2.5 x 10 15 cm -3 . If mobility of carriers is 0.13 m 2 / v-s . Then find the current density if electric field intensity is 3.62 x 10 -19

**Options**

A : 7.6237 x 10 -4 A/ cm 2

B : 7.6237 x 10 -5 A/ cm 2

C : 7.6237 x 10 -3 A/ cm 2

D : none of these

### Consider the system with and where p and q are arbitrary real numbers. Which of the following statements about the controllability of the system is true?

**Options**

A : The system is completely state controllable for any non zero values p and q

B : Only p = 0 and q = 0 result in controllability

C : The system is uncontrollable for all values of p and q

D : We cannot conclude about controllability from the given data

### A MOSFET has a threshold voltage of 1 V and oxide thickness of 500 x 10 -8 [? r = 3.9; ? 0 = 8.85 x 10 -14 F/cm, q = 1.6 x 10 -19 c ]. The region under the gate is ion implanted for threshold voltage tailoring. The base and type of impant required to shift threshold voltage to - 1 V are __________ .

**Options**

A : 8.6 x 10 11 / cm 2 , p -type

B : 8.6 x 10 11 / cm 2 , n -type

C : 0.86 x 10 9 / cm 2 , p -type

D : 1.02 x 10 12 / cm 2 , n -type

### What is the propagation constant for air filled wave guide with dimensions a = 1.59" and b = 0.795" at 4.95 GHz?

**Options**

A : 0.6698

B : 0.7698

C : 0.503

D : 0.6598

### Analog Electronics - Part 1 more Online Exam Quiz

Automatic Control Systems - Part 1

Communication Systems - Part 1

Electromagnetic Field Theory - Part 1

Electronic Devices and Circuits - Part 1

Materials and Components - Part 1

Measurements and Instrumentation - Part 1