MCQOPTIONS
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MCQOPTIONS
This section includes 2171 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 2151. |
Assertion (A): If power gain doubles the power gain increases by 3 dBReason (R): The bel power gain of cascaded stages is equal to sum of each bel power gain |
| A. | Both A and R are correct and R is correct explanation for A |
| B. | Both A and R are correct but R is not correct explanation for A |
| C. | A is correct R is wrong |
| D. | A is wrong R is correct |
| Answer» B. Both A and R are correct but R is not correct explanation for A | |
| 2152. |
In a CE amplifier the input impedance is equal to the ratio of |
| A. | ac base voltage to ac base current |
| B. | ac base voltage to ac emitter current |
| C. | ac emitter voltage to ac collector current |
| D. | ac collector voltage to ac collector current |
| Answer» B. ac base voltage to ac emitter current | |
| 2153. |
In which configuration does output ac voltage appear between emitter and ground? |
| A. | CE |
| B. | CB |
| C. | CC |
| D. | Both CE and CB |
| Answer» D. Both CE and CB | |
| 2154. |
To obtain very high input and O/P impedance in a feedback amplifier, the type of feedback utilized |
| A. | voltage series |
| B. | current series |
| C. | voltage shunt |
| D. | current shunt |
| Answer» C. voltage shunt | |
| 2155. |
In a CE amplifier circuit |
| A. | Q point must lie on both dc and ac load lines |
| B. | Q point lies on dc load line |
| C. | Q point lies on ac load line |
| D. | Q point lies may or may not lie on both dc and ac load lines |
| Answer» B. Q point lies on dc load line | |
| 2156. |
The name field effect is related to the __________ layers of a JFET. |
| A. | depletion |
| B. | drain |
| C. | source |
| D. | gate |
| Answer» B. drain | |
| 2157. |
The circuit in the given figure is |
| A. | positive logic XOR gate |
| B. | negative logic OR gate |
| C. | negative logic AND gate |
| D. | positive logic AND gate |
| Answer» D. positive logic AND gate | |
| 2158. |
For the gate in the given figure the output will be |
| A. | 0 |
| B. | 1 |
| C. | A |
| D. | A ̅ |
| Answer» E. | |
| 2159. |
The circuit of the given figure realizes the function |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 2160. |
For the truth table of the given figure Y = |
| A. | A + B + C |
| B. | A ̅ + BC |
| C. | A ̅ |
| D. | B ̅ |
| Answer» E. | |
| 2161. |
If the functions w, x, y, z are as follows, Then |
| A. | w = z x = z |
| B. | w = z, x = y |
| C. | w = y |
| D. | w = y = z |
| Answer» B. w = z, x = y | |
| 2162. |
If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak) without any DC component, then the output of the comparator has a duty cycle of |
| A. | 1/2 |
| B. | 1/3 |
| C. | 1/6 |
| D. | 1/12 |
| Answer» C. 1/6 | |
| 2163. |
A half wave diode circuit using ideal diode has an input voltage 20 sin ωt volts. Then average and rms values of output voltage are |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 2164. |
Gain of the amplifier is 'A'. Then the I/P impedance and O/P impedance of the closed loop amplifier shown below would be |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 2165. |
In figure v1 = 8 V and v2 = 4 V. Which diode will conduct? |
| A. | D2 only |
| B. | D1 only |
| C. | Both D1 and D2 |
| D. | Neither D1 nor D2 |
| Answer» C. Both D1 and D2 | |
| 2166. |
In figure The minimum and maximum load currents are |
| A. | 0 and 60 mA |
| B. | 0 and 120 mA |
| C. | 10 mA and 60 mA |
| D. | 10 mA and 120 mA |
| Answer» C. 10 mA and 60 mA | |
| 2167. |
An amplifier amplifies signal without changing its |
| A. | shape |
| B. | size |
| C. | frequency |
| D. | wavelength |
| Answer» B. size | |
| 2168. |
A signal that can have only two discrete values is |
| A. | digital signal |
| B. | analogue signal |
| C. | radio signal |
| D. | hybrid signal |
| Answer» B. analogue signal | |
| 2169. |
ADC circuit convers |
| A. | digital to analogue signals |
| B. | analogue to digital signals |
| C. | radio signals to analogue signals |
| D. | digital to discrete signals |
| Answer» C. radio signals to analogue signals | |
| 2170. |
Quantities whose values vary with time are |
| A. | digital |
| B. | scalar |
| C. | analogue |
| D. | vector |
| Answer» D. vector | |
| 2171. |
Quantities whose values vary in non-continuous manner are |
| A. | analogue |
| B. | digital |
| C. | scalar |
| D. | vector |
| Answer» C. scalar | |