In the diagram, the input is across terminals A and C and the output is across terminals B and D, then the output is:


(1) Zero                                                              

(2) Same as input

(3) Full wave rectifier  

(4) Half wave rectifier

Subtopic:  Rectifier |
 57%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The current through an ideal PN-junction shown in the following circuit diagram will be

(1) Zero

(2) 1 mA

(3) 10 mA

(4) 30 mA

Subtopic:  PN junction |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be

(1) 50 Hz                           

(2) 70.7 Hz

(3) 100 Hz                         

(4) 25 Hz

Subtopic:  Applications of PN junction |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

A diode having potential difference 0.5 V across its junction which does not depend on current, is connected in series with resistance of 20 Ω across source. If 0.1 A passes through resistance then what is the voltage of the source

1. 1.5 V                     

2. 2.0 V

3. 2.5 V                     

4. 5 V

Subtopic:  PN junction |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When NPN transistor is used as an amplifier

(1) Electrons move from base to collector

(2) Holes move from emitter to base

(3) Electrons move from collector to base

(4) Holes move from collector to emitter

Subtopic:  Applications of Transistor (OLD NCERT) |
 55%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The phase difference between input and output voltages of a CE circuit is 


(1) 0°                         

(2) 90° 

(3) 180°                      

(4) 270° 

Subtopic:  Applications of Transistor (OLD NCERT) |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The emitter-base junction of a transistor is …… biased while the collector-base junction is ……. biased.
1. reverse, forward                       

2. reverse, reverse

3. forward, forward                       

4. forward, reverse

Subtopic:  Transistor (OLD NCERT) |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In an NPN transistor the collector current is 24 mA. If 80% of electrons reach collector its base current in mA is

1. 36                       2. 26
3. 16                       4. 6

Subtopic:  Transistor (OLD NCERT) |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

If α = 0.98 and current through emitter ie = 20 mA, the value of β is 
(a) 4.9                  (b) 49
(c) 96                   (d) 9.6

Subtopic:  Transistor (OLD NCERT) |
 82%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

In a PNP transistor working as a common-base amplifier, current gain is 0.96 and emitter current is 7.2 mA. The base current is:

(1) 0.4 mA                   

(2) 0.2 mA

(3) 0.29 mA                   

(4) 0.35 mA

Subtopic:  Applications of Transistor (OLD NCERT) |
 63%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints