Crystal Oscillator Question & Answers September 12, 2022 By WatElectronics This article lists 30 crystal oscillator MCQs for engineering students. All the crystal oscillator 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 the crystal oscillator. An oscillator is a device designed for generating electric signals without excitation from external force. The wave generated from these oscillators might either be continuous, discontinuous, or repeated. They are classified as linear and nonlinear oscillators. Linear oscillators such as Phase shift oscillator, multi-vibrator, Crystal oscillators, etc generate periodic forms of signal output. A crystal oscillator is an electronic circuit designed to generate electric-based signals whenever the crystal within the oscillator vibrates. This crystal operator works on the principle of inverse piezoelectric effect. A basic crystal oscillator comprises of a quartz crystal, and 2 conducting wires. The operating frequency of the crystal oscillator is 32KHz to 200MHz. A crystal oscillator has 2 frequencies parallel and serial frequencies. The different types of quartz crystals available include ATCXO, CDXO, DTCXO, TCXO, VCXO, etc. The application of crystal oscillators includes clocks, radios, computers, microcontrollers, space applications, etc. 1). A crystal oscillator is ___ circuit? Mechanical Electrical Electronic Chemical None Hint 2). A crystal oscillator is designed with ____ type of crystal? Piezoelectric Ceramic Lead Zirconate titanate All the above None Hint 3). A crystal oscillator selects ____ parameter element of wave? Frequency Time period Resistance Capacitance None Hint 4). Which of the following is the working principle of crystal oscillator? Piezoelectricity Resonance Resistance Both a and b None Hint 5). Identify the symbol of a oscillator? Oscillator Crystal oscillator CR filter Colpitts Hartley None Hint 6). Like which of the following circuit does a quartz oscillator behaves like at stable resonant based frequency? RC RLC LC RL None Hint 7). A quartz crystal has ____ value of Q factor? Greater Lesser Infinite Zero None Hint 8). When a constant frequency is applied to the quartz crystal the frequency maintained by the crystal is of ____ stability? High Low Zero Constant None Hint 9). Which of the following is the frequency range of quartz crystal? 10’s KHz to 100 MHz 100 KHz to 100MHz 10 MHz to 10GHz 10MHz to 10GHz None Hint 10). Which of the following are the applications of quartz crystal? Computers Radios Clocks All the above None Hint Crystal Oscillator MCQs for Interviews 11). The resonant frequency of a quartz crystal is found using ____ parameters of crystal? Cut Size Area Both a and b None Hint 12). A crystal oscillator has __ number of plates? 2 3 4 5 None Hint 13). Frequency is expressed in terms of ____? Hertz Watts Meters OHMS None Hint 14). Quartz crystals are classified as ____? Left handed Right handed Centre figure Both a and b None Hint 15). Abbreviate ATCXO? Analog temperature controlled crystal oscillator Analog turn controlled crystal oscillator Analog temperature cut crystal oscillator Analog temperature controlled cut oscillator None Hint 16). VCXO stands for? Voltage controlled crystal oscillator Voltage cut crystal oscillator Voltage controlled cut oscillator Variable controlled crystal oscillator None Hint 17). Which of the following modulations are the applications of VCXO? AM PM FM Both b and c None Hint 18). Crystal oscillator produces ____ types of signals? Periodic Aperiodic Non-linear No-signal None Hint 19). Which of the following is the shape of output wave obtained from electronic from crystal oscillator? Square wave Sine wave Triangle wave Both a and b None Hint 20). Which of the following are the primary components of crystal oscillator? Quartz crystal Metalized electrodes Resistors Both a and b None Hint Crystal Oscillator MCQs for Exams 21). In which of the following type of microcontroller quartz crystal is used? 8051 8086 8088 8082 None Hint Read more about Microcontroller 22). ___ is defined as mechanical based deformation generated on applying current across a crystal? Piezoelectric effect Magnetic effect Electric effect All the above None Hint 23). Which of the following is the formula of serial frequency of a quartz crystal? f=1/2pi[sqrt Ls Cs] f=1/pi[sqrt Ls Cs] f=pi[sqrt Ls Cs] f=2pi[sqrt Ls Cs] None Hint 24). Which of the following is the formula of serial frequency of a quartz crystal? f=1/2pi[sqrt [Ls [ Cp Cs / Cp + Cs]] f=1/pi[Ls [ Cp Cs / Cp + Cs]] f=pi[Ls [ Cp Cs / Cp + Cs]] f=2pi[Ls [ Cp Cs / Cp + Cs]] None Hint 25). In series resonance ____ is observed in crystal oscillators characteristics? Capacitive Inductive Resistive Both a and c None Hint 26). The region between series resonance and parallel resonance of crystal oscillators characteristics is? Capacitive Inductive Resistive Both a and c None Hint 27). Which of the following is the frequency of crystal oscillator? 32KHz to 200MHz 30KHz to 200MHz 32KHz to 100MHz 32KHz to 2000MHz None Hint 28). Time period is expressed in terms of ____? Seconds Hertz Centimeters Meters None Hint 29). Which of the following is the shape of output wave generated from colpitts oscillator? Sine Square Rectangle Triangle None Hint Read more about Colpitts oscillator 30). Which of the following is the automotive applications of crystal oscillator? GPS Stereo Engine controlling All the above None Hint For More MCQs Oscillators Question & Answers. Voltage Controlled Oscillator Question & Answers. RC Phase Shift Oscillator Question & Answers. Hartley Oscillator Question & Answers. Colpitts Oscillator Question & Answers. Wien Bridge Oscillator Question & Answers. Please fill in the comment box below. Time's up
