Loop Antenna Question & Answers August 1, 2022 By WatElectronics This article lists 40 Loop Antenna MCQs for engineering students. All the Loop Antenna Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Loop Antenna. The antenna is an electrical device designed for wireless communication purposes up to certain coverage according to design. They are classified in different ways based on the design functionality like loop antenna, radiation pattern type antenna, impedance type antenna, etc. Antenna designed in a shape of loop fed with an input power source to operate that is to radiate is a loop antenna. They are classified into 2 main types large loop, small loop, and halo loop antenna. A large loop antenna also named self-resonant loop antenna is a trans-receiver antenna, that operates at the self-resonating frequency and comprises 2 lobe radiation pattern. A small loop antenna is also a magnetic loop antenna designed with a loop circumference of 1/10 lambda value. These antennas are used only as receivers. A Halo-type antenna exhibits the property between small and large loop antenna characteristics. The working of Halo type antenna is similar to a small loop antenna but variate in terms of radiation resistance. The advantages of a loop antenna are size is compact and max directivity, the disadvantages of the loop antenna are very high Q value and improper impedance matching. The applications of loop antennas include AM receivers, UHF transmitters, RFID devices, and aircraft. Name Email 1). Which of the following are the components of loop antenna? Wire Coil Tubing Electrical conductor All the above Hint 2). How many types of loop antennas are there? 2 3 4 5 Hint 3).Which of the following type of loop antenna is also called self resonant type loop antenna? Large loop Halo loop Small loop All the above Hint 4). How many lobe radiation patterns does a large loop antenna has? 2 3 4 5 Hint 5). Which of the following type of loop antennas have shortened dipoles? Large loop Halo loop Small loop All the above Hint 6). Which of the following are the characteristics of a large loop antenna? Greater radiation efficiency Small size Minimum capacitive effect Both a and b Hint 7). On which of the following parameter does the large loop antenna depends on? Capacitive effects Efficiency Inductive effect Both a and b Hint 8). Which of the following type of loop antenna is called magnetic type loop antenna? Large loop Halo loop Small loop All the above Hint 9). A small loop type loop antenna are used as ___ component in communication? Receivers Transmitters Transceivers None of the above Hint 10). Which of the following is the value of length of large loop antenna? L=Lamda L=Lamda/2 L=Lamda/4 L=infinity Hint Loop Antenna MCQs for Interviews 11). Which of the following is the value of length of small loop antenna? L=lamda L=Lamda/2 L=Lamda/10 L=infinity Hint 12). Which of the following are the characteristics of small loop antenna? Minimum radiation Greater losses Small in size All the above Hint 13). Due to which of the following imbalance parameter small loop antenna acts as a receiver antenna? Resistance Reactance Inductance Capacitance Hint 14). Which of the following are the types of small loop based antennas? Square loop Circular loop Rectangle loop All the above Hint 15). Which of the following is the major application of a small loop antenna? AM receivers FM receiver PM receiver None of the above Hint 16). Which of the following parameter of a small loop antenna gets disturbed when it acts as a transmitter? Resistance Reactance Inductance Impedance Hint 17). A small loop antennas are quickly tuned to ____ circuit of radio type receiver? Q tank RMS Break point None of the above Hint Read more about Amplitude Modulation 18). Which of the following might be the direction of polarization of loop antenna? Horizontal Vertical Both a and b None of the above Hint 19). Based on which of the following parameter does polarization of loop antenna depends on? Area Shape Dimension None of the above Hint 20). A small type loop antenna is ____ direction based polarized? Linear Nonlinear Zero directional Both a and b Hint 21). Which of the following are the advantages of loop antenna? Max directivity Size is compact High noise Both a and b Hint 22). Which of the following are the disadvantages of loop antenna? Very high Q value Improper impedance matching High load Both a and b Hint 23). Which of the following are the DYI applications of loop type antenna? RFID devices UHF transmitters Aircrafts All the above Hint 24). Which of the following is the frequency range of loop antenna? 300MHz to 3GHz 3MHz to 3GHz 30MHz to 300GHz None of the above Hint 25). A loop antenna is a ___ device? Electrical Electronic Mechanical None of the above Hint Loop Antenna MCQs for Quiz 26). Which of the following is the bandwidth of small loop type antenna? Narrow frequency Wider frequency Zero None of the above Hint 27). The gain of small loop type antenna is ____? Maximum Minimum Zero Infinity Hint 28). A 1 wavelength perimeter based loop antenna acts as ____? Folded dipole antenna Half wave dipole antenna Full wave dipole antenna Both a and b Hint 29). Which of the following is the frequency range if HF? 3 to 30MHz 30 to 300MHz 300 to 3000MHZ 5000GHZ Hint 30). Which of the following is the frequency range if VHF? 3 to 30MHz 30 to 300MHz 300 to 3000MHZ 5000GHZ Hint 31). Which of the following is the frequency range if UHF? 3 to 30MHz 30 to 300MHz 300 to 3000MHZ 5000GHZ Hint 32). A loop antenna is ___ in nature? Inductive Capacitive Resistive Both a and b Hint Loop Antenna MCQs for Exams 33). Which of the following is the formula of power pattern of loop antenna? Sin (teta) ^2 Cos (teta) ^2 Tan (teta) Cot (teta) Hint 34). An antenna is a __ communication component? Wired Wireless Connection Both a and c Hint 35). Which of the following are the components of an antenna? Transmitter Receiver Channel All the above Hint 36). Which of the following radiation form is emitted from antenna? Electromagnetic Electric Magnetic All the above Hint 37). Which of the following is the speed of EM wave? 3*10^8 m/s 3*10^-8 m/s 3*10^2 m/s 3*10^-2 m/s Hint 38). Which of the following are the functions of antenna? Transducer Match impedance Sensor All the above Hint Read more about Transducer 39). Which of the following is the unit of radiation intensity? Watts/steradian W/sr Joules Joules/cm Hint 40). Which of the following are the basic applications of standard antenna? GPS Sensors Remote systems All the above Hint For More MCQs Antenna Question & Answers. Yagi Uda Antenna Question & Answers. Please fill in the comment box below. Time is Up! Time's up
