Ideal Diode Question and Answers June 27, 2022 By WatElectronics This article lists 40 Ideal Diode MCQs for engineering students. All the Ideal Diode 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 Ideal Diode. A semiconductor is made of terminals known as Anode and Cathode. This component allows the current to flow in one direction. Due to this less than zero resistance is offered in one direction and in the other direction, the resistance value is infinite. The ideal diode is enacted as a 'Perfect conductor for forwarding voltages' and as a ‘perfect insulator for reverse voltages’. It has both the characteristics of conductor and insulator based on the application of voltages. Practically used diodes are termed Real diodes. There is a basic difference between real and ideal ones. A diode that starts conducting for the 'forward voltages' applied is termed an ideal diode. But real diodes begin conduction once the applied voltage crosses the cut-in voltage is termed a real diode. Ideal diodes don’t have Breakdown voltage because the resistance offered to reverse voltage is infinite. But the conventional diodes have breakdown voltages. They have constant and fixed drops of voltage. 1). How ideal diode responds to forward voltages? Perfect conductor Perfect insulator Semiconductor Insulator None Hint 2). How ideal diode responds to reverse voltages? Perfect conductor Perfect insulator Semiconductor Insulator None Hint 3). In Ideal diode, the current proceed in ______? Unidirectional Bidirectional Multiple directions Both directions None Hint 4). Will the diode permit reverse currents ideally? Yes No Depends on condition Only Yes None Hint 5).What happens if the current is passed in reverse mode? Current is allowed Current proceeds Current is blocked Current is conceded None Hint 6). Ideal diode offers _______ for applied forward potential? ∞ resistance 0 resistance Equivalent resistance Limited resistance None Hint 7). Ideal diode offers ______ resistance in reverse biasing condition? ∞ 0 Equivalent Limited None Hint 8). What is the threshold for ideal diode? ∞ 0 Positive Negative None Hint 9).What is the amount of reverse current passed through diode ideally? ∞ 0 Positive Negative None Hint 10). Is there any Depletion region present in ideal diode? Yes No Based on applied potential Infinite None Hint 11). The forward currents in ideal diodes is _______? ∞ 0 Positive Negative None Hint 12). How diode circuit behaves in forward mode ideally? Resistive Short-circuit Open circuit Series None Hint 13). What are the conditions that describe ideal diode characteristics in reverse mode? Infinite Resistance Leakage current= 0 Breakdown potential=0 All mentioned above None Hint 14). How diode circuit behaves in reverse mode ideally? Resistive Short-circuit Open circuit Series None Hint 15). What are the conditions that describe ideal diode characteristics in forwarding mode? Zero Resistance Infinite current Threshold potential=0 All mentioned above None Hint Ideal Diode MCQs for Interviews 16). Ideal diodes behave as __________ switch? Perfect conductor Perfect Insulator Perfect Semiconductor Conductor None Hint 17). How many terminals ideally a diode have? One Two Three Four None Hint 18). Anode is the ______ terminal? Positive Negative Neutral Delicate None Hint 19). How ideally the diode is represented in forward mode? Anode is connected to source positive Cathode is connected to source positive Anode is grounded b & c None Hint 20). How ideally the diode is represented in reverse mode? Anode is connected to source positive Cathode is connected to source positive Anode is grounded b and c None Hint 21). Ideal diode I-V curve is ________? Linear Non-linear Parabolic symmetric None Hint 22). Ideal type diodes don’t have _______ voltage? Threshold Forward Reverse Conducting None Hint 23). Ideal type diodes have ______ forward currents? Limited Unlimited Constant Negotiable None Hint 24). What is the basic responsibility of a Ideal diode? Control the Voltage flow Control the temperature Control the current to flow in single direction Control the current to flow in bidirection None Hint 25). For what currents Ideal diodes conduct? Leakage Forward Reverse Breakdown None Hint 26). What is considered true for Ideal diodes? Allow current passage in forwarding mode Blocks the current to flow in reverse mode V-I curve is non-linear All mentioned above None Hint 27). What is the potential drop value of Ideal diodes in forward mode? 0.8 V 0.7 v 0.3 V 0V None Hint 28). What is the amount of current in the circuit flows considering the circuit is ideal? Diode Forward Bias Add description here! 3 Amps 3mAmps 4 Amps 1mAmps None Hint 29). Calculate Diode current & voltage of the circuit if voltage at base 5volts & R=1 Kohms? Add description here! 0V, 1mAmps 1V, 2mAmps 0V, 5 mAmps 1V, 3A None Hint 30). Calculate Current value for the given circuit? Add description here! 4 mA 3 mA 2 mA 0 mA None Hint Ideal Diode MCQs for Exams 31). If V1=2V and V2= -4V, find the value of the voltage at the output for ideal type diodes? Add description here! 0 Volts 2 Volts 3 Volts 4 Volts None Hint 32). If V1=-2V and V2= -4V, find the value of the voltage at the output for ideal type diodes? Add description here! 0 Volts 2 Volts 3 Volts 4 Volts None Hint 33). Diodes used in _____? Logic Gates Rectifiers Amplifiers a, b and c None Hint 34). What material is used to make diode? Conductor Insulator Semiconductor a & b None Hint 35). What are the various models of diode? Ideal Diode Exponential Constant Voltage Source All mentioned above None Hint 36). What are the units used in the measurement of forward current & Reverse currents in diode (ideal)? Micro Amperes, Micro Amperes Micro Amperes, milli Amperes milli Amperes, Micro Amperes milli Amperes, milli Amperes None Hint 37). If the value of resistance is 10 K ohms V1=5Volts, V2= -4 Volts. What is the current value for the diode (ideal)? Add description here! 0.3 m Amps 0.4 m Amps 0.5 m Amps 0.6 m Amps None Hint 38). What is the amount of voltage at the output in the given circuitry? -2V -3V -4V 0 V None Hint 39). If the source of current generates 1 milli Amps of current with resistance R as 2ohms. Find the potential value of the diode (Ideal)? Add description here! 0 Volts 1 Volts 2 Volts 3 Volts None Hint 40). In practice, the diodes in ideal form _____? Exist Doesn’t exist Exist with modification Can’t say None Hint Please fill in the comment box below. Time's up
