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WorksheetsHAUNTING_ARENA
Total questions: 33
Worksheet time: 6mins
In a pure resistor circuit, current and voltage are:
Out of phase
In phase
90° apart
Opposite in direction
The power factor of a pure inductor is:
0
1
-1
0.5
The unit of inductance is:
Ohm
Farad
Henry
Weber
In a series RLC circuit at resonance, the impedance is:
Maximum
Minimum
Zero
Infinite
In an AC circuit, the RMS value of current is related to peak current as:
Im / √2
Im × √2
Im / 2
2Im
Optical fibers work on the principle of:
Reflection
Refraction
Total Internal Reflection
Diffraction
The core of an optical fiber has a refractive index:
Higher than cladding
Lower than cladding
Equal to cladding
None
The typical wavelength used in optical fiber communication is:
650 nm
850 nm
1300 or 1550 nm
2000 nm
The device used as an optical detector is:
LED
Photodiode
Laser
LDR
Dispersion in optical fiber causes:
Attenuation
Pulse broadening
Amplification
Distortion correction
The primary advantage of CMOS technology is:
High power dissipation
Low power dissipation
Complex design
Large area requirement
In CMOS, the conducting state of NMOS is when:
Vgs <Vth
Vgs >0
Vds = 0
The logic function of a NAND gate in CMOS is implemented using:
Series NMOS and parallel PMOS
Series PMOS and NMOS
Parallel NMOS only
Inverter
The threshold voltage of MOSFET depends on:
Doping concentration
Gate oxide thickness
Both A and B
None
The delay in CMOS is mainly due to:
Resistance of metal
Capacitance of load
Inductance
Substrate leakage
The gain of an antenna is defined as:
Input power / Radiated power
Radiated power / Input power
Voltage / Current
None
The unit of antenna gain is:
dB
Watt
Meter
Henry
The radiation pattern shows:
Current distribution
Directional power distribution
Voltage waveform
Frequency spectrum
Which antenna is used in satellite communication?
Parabolic dish
Loop antenna
Patch antenna
Ferrite rod
Polarization of antenna refers to:
Direction of current flow
Orientation of electric field
Wavelength
Beam width
The 8085 microprocessor is a:
4-bit processor
8-bit processor
16-bit processor
32-bit processor
The clock frequency of 8085 is typically:
1 MHz
10 MHz
20 MHz
100 MHz
The instruction “MOV A, B” performs:
Add B to A
Copy B into A
Move A to B
Subtract B from A
The 8051 microcontroller has:
Harvard architecture
Von Neumann architecture
Dual-core
None
The memory size of internal ROM in 8051 is:
2 KB
4 KB
8 KB
16 KB
The main function of an operating system is:
Compiling code
Managing resources
Designing hardware
Running antivirus
Which of the following is not an OS?
Linux
Windows
Oracle
Android
Which scheduling algorithm gives first priority to the shortest job?
FCFS
SJF
Round Robin
Priority
A deadlock occurs when:
Processes are waiting for each other’s resources
Process finishes execution
No process is running
All memory is free
In a multiprogramming environment, CPU utilization is:
Low
High
Zero
Random
The device used to amplify weak signals:
Resistor
Capacitor
Diode
Amplifier
The unit of resistance is:
Ampere
Volt
Ohm
Farad
A diode conducts current in:
Both directions
Forward direction only
Reverse direction only
