In a MOSFET operating in the saturation region, the channel length modulation effect causes
Answer : Option DExplaination / Solution:
In a MOSFET operating in the saturation region, the channel length modulation effect causes a decrease in output resistance.
The bit rate of a digital communication system is R kbits/s. The modulation used is 32-QAM. The minimum bandwidth required for ISI free transmission is
Answer : Option BExplaination / Solution:
In ideal Nyquist Channel, bandwidth required for ISI (Inter Symbol reference) free transmission is
Here, the used modulation is 32 - QAM (Quantum Amplitude modulation
Q5.In the summer of 2012, in New Delhi, the mean temperature of Monday to
Wednesday was 41°C and of Tuesday to Thursday was 43 °C. If the temperature
on Thursday was 15% higher than that of Monday, then the temperature in °C
on Thursday was
Answer : Option CExplaination / Solution: No Explaination.
Q6.A car travels 8 km in the first quarter of an hour, 6 km in the second quarter
and 16 km in the third quarter. The average speed of the car in km per hour
over the entire journey is
Answer : Option CExplaination / Solution: No Explaination.
Q9.What is the chance that a leap year, selected at random, will contain 53
Sundays?
Answer : Option AExplaination / Solution:
In a leap year, there are 366 days So, 52 weeks will have 52 saturdays and for remaining two days (366 - 52 × 7 = 2) We can have the following combinations
Saturday, Sunday
Sunday, Monday
Monday, Tuesday
Tuesday, Wednesday
Wednesday, Thursday
Thursday, Friday
Friday, Saturday
Out of these seven possibilities, only two consist a saturday. Therefore, the probability of saturday is given as