RC Phase Shift Oscillator Question & Answers August 12, 2022 By WatElectronics This article lists 50 RC Phase Shift Oscillator MCQs for Engineering Students. The RC Phase Shift Oscillator Questions & Answers below include solutions and links to the relevant topic. This is helpful for users who are preparing for their exams and interviews, or professionals who would like to brush up on the fundamentals of the RC Phase Shift Oscillator. Electronic circuits used in producing sine and square waves are referred to as Oscillators. This circuit doesn't need any signal at the input. The output wave produced is periodically based on the DC voltage supplied. Oscillators are classified as Feedback and Relaxation oscillators. Feedback Oscillators consist of an amplifier to achieve gain and the feedback in the circuit is positive. This feedback is useful in producing phase-shift and providing attenuation. Instead of feedbacks oscillator prefer RC timing circuits that generate waveforms either square or non-sinusoidal ones are known as Relaxation oscillators. To produce sinusoidal outcomes feedback circuits are used. Feedback oscillators that prefer RC circuits are Wien-bridge oscillators, Phase-shift oscillators, and Twin-T oscillators. The total phase-shift provided by three networks of RC is 180. Each RC produces 60 degrees of phase shift. 1). What are the types of Oscillators? Feedback Oscillators Relaxation Oscillators a & b Harmonic Oscillators None Hint 2). Oscillators have ______ feedback. Positive Negative a & b None None Hint 3). ______ are Self-driven. Multiplexer De-multiplexer Oscillator Sensors None Hint 4). How many RC loops are needed in Phase-shift oscillators? Two Three Four Five None Hint 5). What kind of amplifier is utilized in RC Phase-Shift Oscillators? Inverting Non-inverting a & b Any amplifier None Hint 6). How many of the minimum number of networks are present in RC Phase-shift Oscillators? 3 2 1 0 None Hint 7). How many inductors are utilized in each Feedback network of RC? 3 2 1 0 None Hint 8). Each loop of RC has ______ capacitors. 3 2 1 0 None Hint 9). What is utilized by RC Phase-Shift Oscillators to form a network? Resistor Capacitor Inductor a & b None Hint 10). The expected outcome of RC Network leads input from ______. 90 180 270 360 None Hint Read more about RC Phase Shift Oscillators 11). How the angle of phase is calculated in RC Phase-Shift Oscillators? tan-1 XC/R tan-1 XC 1/ R cot-1 XC/R None Hint 12). How is the oscillations frequency calculated in RC Phase-Shift Oscillators? f = 1/2πRC√2N f = 1/2πRC f = 1/2π f = 1/RC None Hint 13). What happens if the network stages increase in RC Phase-Shift Oscillators? Frequency Stability Increased Frequency Stability Decreased Attenuation is More a &c None Hint 14). What is the attenuation caused by the Feedback network in RC Phase-Shift Oscillators? 1/25 1/29 1/20 1/15 None Hint 15). As per the Barkhausen criterion how much should be Phase-shift? 90 180 270 360 None Hint 16). What is the frequency of the three stages of RC? f = 1/2πRC√2*3 f = 1/2πRC f = 1/2π√6 a & c None Hint 17). How many resistors are placed in a three-loop RC? 3 2 1 0 None Hint 18). Each phase-shift loop of RC in a three-stage has a phase-shift of about _____. 45 60 180 360 None Hint 19). Each phase-shift loop of RC in a four-stage has a phase-shift of about _____. 45 60 180 360 None Hint 20). At what angle does the oscillation begin in RC Phase-shift oscillators? 45 60 180 360 None Hint RC Phase Shift Oscillator MCQs for Students 21). What type of waveform is generated by RC Phase-shift Oscillators? Sine Cosine a & b None None Hint 22). What should be the gain of the RC Phase-shift Oscillator that satisfies the Barkhausen criterion? 25 27 29 31 None Hint 23). RC Phase-shift Oscillators have ______ frequency. Fixed Varying Dynamic Changes with R & C values None Hint 24). What is not required in RC Phase-shift Oscillators? Capacitors Inductors Transformers b & c None Hint 25). What does the active element present in RC Phase-shift Oscillator? Transistor Sensor Capacitor Inductor None Hint 26). What are the limitations of designing an RC Phase-shift Oscillator using a Transistor? Additional Circuit Needed to Stabilize Stable for Low Frequency Susceptible to Noise Interference All Mentioned Above None Hint 27). What happens to capacitor reactance for high frequencies? Low High Decreases a & c None Hint 28). Noise in RC Phase-shift Oscillators is ______. Low High Increased a & c None Hint 29). What are the various advantages of RC Phase-shift Oscillators? Self-starting Low Noise Adjustable Gain All Mentioned Above None Hint 30). A RC Phase-shift Oscillator consists of capacitors of 4 pico Farads at a frequency equivalent to 600 kHz. Find R. 25.07 K Ohms 26 K Ohms 27.07 K Ohms 27.07 Ohms None Hint 31). What is the oscillator's frequency if a three-stage RC network in RC Phase-shift Oscillator consists of 8nF capacitors and resistance at each stage is equivalent to 10 K Ohms? 928 Hz 900 KHz 812.18 Hz 811.23 Hz None Hint 32). What restricts the frequency at the output in RC Phase-shift Oscillators? Self-Resonance Bandwidth Impedance Attenuation None Hint RC Phase Shift Oscillator MCQs forExams 33). Higher frequency in RC phase shift oscillators can be achieved by stepping up with ______. Capacitor Resistor Phase-Locked Loop (PLL) Inductor None Hint 34). What is the extra circuitry required in RC phase shift oscillators? Transistors Resistors Inductors Sensors None Hint 35). The components in RC phase shift oscillators restricts _________. Gain Resonance Impedance Frequency None Hint 36). The capacitor of 1/√6 π pico farads is placed in an RC Phase-shift Oscillator with resistance (R) & produces a Frequency of 100 kHz. Calculate the value of R for a three-stage RC. 50 K Ohms 500 K Ohms 5000 K Ohms 5000 Ohms None Hint 37). How is the frequency desired obtained in RC Phase-shift Oscillators? By Changing Resistor Values By Changing Capacitor Values a & b None None Hint 38). The outcome obtained from RC Phase-shift Oscillators is _____. Large Negligible Small Distorted None Hint 39). Initialising oscillations in RC phase shift oscillators is ________. Hard Easy Simple None None Hint 40). Phase-shift oscillators are ____. Simple Difficult Linear a &c None Hint RC Phase Shift Oscillator MCQs for Quiz 41). How RC Phase-shift Oscillator differs from the Wien Bridge oscillator? Phase-shift provided Gain Feedback Provided Generates Sine Wave None Hint 42). Manufacturing cost of RC Phase-shift oscillators is _______. Low High Expensive Based on Components None Hint 43). What are the various applications where RC Phase-shift Oscillators are placed? Musical Instruments GPS Units Voice Synthesis All Mentioned Above None Hint 44). RC Phase-shift Oscillators are suitable for ______ frequency. 1 Hz 1Hz – 10 Hz 1 Hz -10 MHz 1MHz – 10 MHz None Hint 45). Which oscillators are preferred for low frequencies? RC Phase-Shift Oscillators LC Oscillators Wien Bridge Oscillators Hartley Oscillators None Hint 46). What are the advantages of RC Phase-shift Oscillators? Simple to Design Output Produced over AF Range Frequency Stability All Mentioned Above None Hint 47). Fixed Frequency Oscillator is _____________. RC Phase-Shift Oscillators LC Oscillators Wien Bridge Oscillators Hartley Oscillators None Hint 48). What is the downside of RC Phase-shift Oscillators? Negative Feedback High Frequency Stabilization Arrangement a & c None Hint 49). RC Phase-shift Oscillators don't require _______. Negative Feedback High Frequency Stabilization Arrangement a & c None Hint 50). Synchronous receivers use _____. RC Phase-Shift Oscillators LC Oscillators Wien Bridge Oscillators Hartley Oscillators None Hint For More MCQs Oscillators 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