NMDCAT Quiz-Phy & Eng
Master the NMDCAT: Physics & Engineering Quiz
Welcome to the NMDCAT Quiz focused on Physics and Engineering! This comprehensive quiz is designed to assess your knowledge and understanding of key concepts in these subjects, essential for any aspiring medical or engineering student.
Test your skills with:
- 20 thought-provoking questions
- Multiple choice format
- Instant feedback on your answers
1-A diode characteristic curve is a graph between:
Current and time
Voltage and current
Voltage and time
Forward voltage and reverse current
2-In half wave rectification, the output DC voltage is obtained across the load for:
The positive half cycle of input AC
The negative half cycle of input AC
The positive and negative half cycles of input AC
Either positive or negative half cycle of input AC
3-The device used for conversion of AC into DC is:
An oscillator
An amplifier
A detector
A rectifier
4-A junction diode when forward biased behaves as a device of:
Zero resistance
Low resistance
Infinite resistance
High resistance
5-The potential barrier in a diode stops the movement of:
Holes only
Both electrons and holes
Electrons only
Bounded electrons
6-Which circuit is used for the smooth output voltage in rectification?
Oscillator
Rectifier
Filters
Amplifier
7-How many diodes are used for the full wave rectification in bridge rectifier:
2
4
3
5
8-A half wave rectifier is being used to rectify an alternating voltage of frequency 50 Hz. The number of pulses of rectified current obtained in one second is:
50
100
25
200
9-If AC voltage of 60 Hz is applied as input to a full wave rectifier, the frequency of output voltage (ripple) will bee:
30 Hz
60 Hz
120 Hz
60/2 pi Hz
10-In a bridge full wave rectifier, the input sine wave is 250sin100 ( pi )t. The output frequency will be:
50 Hz
100 Hz
200 Hz
25 Hz
11-The output voltage of rectifier is not smooth, it can be made smooth by circuit known as:
Wheatstone circuit
Bridge circuit
Ripple circuit
Filter circuit
12-In case of half wave rectification, the resistance of diode during negative half of AC is:
Very high
Very low
Negative
A few ohms
13-The direction of current through the load resistance of a full-wave rectification circuit:
Inverts for negative cycle
Changes for every cycle
Inverts for positive cycle
Remains constant
14-Most common devices used for filters in Full-Wave Rectification
Capacitors
Inductors
Amplifiers
Resistors
15-For charging batteries, ..............wave rectification.
Half
Full
Both
None
16-ALAS synonyms
Sadly
Unhappily
Regrettably
All
17-ACCENTUATED opposite word
Loosened
Slackened
Eased
All
18-BOON similar word
Godsend
Windfall
Bonus
All
19-DANK counter word
Tepid
Hot
Balmy
All
20-DISGUISE antonym
Mask
Cloak
Reveal
All
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