MCQOPTIONS
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MCQOPTIONS
This section includes 869 Mcqs, each offering curated multiple-choice questions to sharpen your BITSAT knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
Each cell of a static Random Access memory contains |
| A. | 6 MOS transistor |
| B. | 4 MOS transistor, 2 capacitor |
| C. | 2 MOS transistor, 4 capacitor |
| D. | 1 MOS transistor and 1 capacitor |
| Answer» B. 4 MOS transistor, 2 capacitor | |
| 852. |
Two identical silicon diodes D1 and D2 are connected back to back shown in figure. The reverse saturation current Is of each diode is 10¯⁸ amps and the breakdown voltage VBr is 50 v. Evaluate the voltages VD1 and VD2 dropped across the diodes D1 and D2 assuming KT/q to be 25 m V. |
| A. | 4.983 V, 0.017 V |
| B. | - 4.98 V, - 0.017 V |
| C. | 0.17 V, 4.983 V |
| D. | - 0.017 V, - 4.98 V |
| Answer» C. 0.17 V, 4.983 V | |
| 853. |
As per Einstein's equation, the velocity of emitted electron in photoelectric emission is given by the equation |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 854. |
From the given circuit below, we can conclude that. |
| A. | BJT is pnp |
| B. | BJT is npn |
| C. | transistor is faulty |
| D. | not possible to determined |
| Answer» D. not possible to determined | |
| 855. |
In the circuit of figure the function of resistor R and diode D are |
| A. | to limit the current and to protect LED against over voltage |
| B. | to limit the voltage and to protect LED against over current |
| C. | to limit the current and protect LED against reverse breakdown voltage |
| D. | none of the above |
| Answer» D. none of the above | |
| 856. |
The v-i characteristics of a FET is shown in figure. In which region is the device biased for small signal amplification. |
| A. | AB |
| B. | BC |
| C. | CD |
| D. | BD |
| Answer» C. CD | |
| 857. |
In a P-N junction the barrier potential offers opposition to only: |
| A. | Free electrons in N-region |
| B. | Holes in P-region |
| C. | Minority carriers in both regions |
| D. | Majority carriers in both regions |
| Answer» E. | |
| 858. |
The logic 1 in positive logic system is represented by ? |
| A. | Lower voltage level |
| B. | Zero voltage |
| C. | Negative voltage |
| D. | Higher voltage level |
| Answer» E. | |
| 859. |
An example of solid state device is: |
| A. | Triode |
| B. | Zener diode |
| C. | Thyratron |
| D. | Pentode |
| Answer» C. Thyratron | |
| 860. |
Reverse resistance of a diode is of the order of: |
| A. | Ohm |
| B. | Milli ohm |
| C. | Mega ohm |
| D. | Kilo ohm |
| Answer» D. Kilo ohm | |
| 861. |
For highly doped diode: |
| A. | Avalanche breakdown is likely to take place |
| B. | Zener breakdown is likely to take place |
| C. | Neither ( nor ( can take place |
| D. | Either ( or ( can take place |
| Answer» C. Neither ( nor ( can take place | |
| 862. |
In Zener diode large reverse current is due to: |
| A. | Presence of impurities |
| B. | Collision |
| C. | Low resistance in the reverse biased region |
| D. | Rupture of bonds |
| Answer» E. | |
| 863. |
Which function -positive logic is equivalent to OR function in negative logic? |
| A. | OR |
| B. | NOT |
| C. | NOR |
| D. | AND |
| Answer» E. | |
| 864. |
In the depletion region in the P-N junction there are: |
| A. | No current |
| B. | No charges |
| C. | No electron |
| D. | No mobile charges |
| Answer» E. | |
| 865. |
A Thyratron is a: |
| A. | Gas filled triode |
| B. | Gas filled diode |
| C. | Gas filled pentode |
| D. | Gas filled tetrode |
| Answer» B. Gas filled diode | |
| 866. |
Which of the following logic expressions is wrong ? |
| A. | 1 1=0 |
| B. | 1 0=1 |
| C. | 1 1 1=1 |
| D. | 1 0 1=1 |
| Answer» E. | |
| 867. |
The arrow head of transistor symbol always shows the direction of: |
| A. | Conventional current flow |
| B. | Electron flow in emitter region |
| C. | Minority carrier flow in the emitter region |
| D. | Majority carrier flow in the emitter region |
| Answer» B. Electron flow in emitter region | |
| 868. |
Which of the following property is true in context of Well Formed Formula(WFF) ? |
| A. | If x and y are terms then x = y is a formula |
| B. | Each letter is a term |
| C. | All of above |
| D. | If P is a formula then 7p is a formula |
| Answer» B. Each letter is a term | |
| 869. |
LEDs are fabricated from: |
| A. | Germanium |
| B. | Silicon |
| C. | Gallium arsenide |
| D. | Si or Ge |
| Answer» D. Si or Ge | |