Open Collector Question & Answers May 27, 2022 By WatElectronics This article lists 100 Open Collector MCQs for Engineering Students. All the Open Collector Questions & Answers given below includes solution and link wherever possible 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 open collector. The transistor-transistor logic gate families are categorized into three types they are totem pole, three-stage output, and open-collector output. In TTL open collector NAND gate the output is taken from the open collector that's why it is referred to as an open collector. The complete circuit of the TTL open collector NAND gate is divided into three sections: the input section, the phase splitter section, and the third one is output section. In the input section, we give input and the output is taken from the output section. The phase splitter is one type of BJT which is used to divide the signals into more than one or multiple phases. The phase splitter is also called a phase inverter. The cathodyne-phase inverter, transformer, cross-coupled, para-phase, and Schmidt are a few types of phase splitters. In an open collector, the power dissipation is high due to the current flowing and the operating speed is low when compared to the totem pole. The open collector is also known as an open drain and it is a common type of digital signal which provides open and ground. 1). In which one of the following the power dissipation is low? Totem pole Open collector Both a and b None of the above None Hint 2). In which one of the following the external pull up resistor is required? Totem pole Open collector Both a and b None of the above None Hint 3). In an open collector transistor-transistor logic gate, the output stage requires active ___________? Pull up transistors Pull down transistors Either pull up or pull-down transistors None of the above None Hint 4). The transistor-transistor logic gate families are categorized into ______________ types? One Two Three Four None Hint 5). The tristate output configuration has _____________ possible output states? One Two Three Four None Hint 6). What is the standard form of LTTL? Low Power Transistor-Transistor Logic Low Power Transistor-Transformer Logic Low Power Transistor Logic None of the above None Hint 7). The propagation delay of low power transistor-transistor logic gate is ____________ ns? 50ns 60ns 33ns 89ns None Hint 8). The figure of merit speed power product of standard TTL gate is ____________ PJ? 10 PJ 50 PJ 70 PJ 100 PJ None Hint 9). The power dissipation of standard TTL logic gate is ___________ mW? 100 mW 50 mW 70 mW 10 mW None Hint 10). The propagation delay of standard transistor-transistor logic gate is ____________ ns? 10 ns 50 ns 70 ns 100 ns None Hint Read more about Transistor Open Collector MCQs for Quiz 11). What is the standard form of HTTL? High Speed Transistor-Transistor Logic High Speed Transistor-Transformer Logic High Speed Transistor Logic None of the above None Hint 12) Which one of the following is an example for standard TTL logic gate? 7402 74H02 74L02 None of the above None Hint 13). The low power Schottky TTL propagation delay is around __________ ns? 1ns 2ns 3ns 9.5ns None Hint 14). The power dissipation of the low power Schottky TTL logic gate is ____________ mW? 1mW 2mW 3mW 4mW None Hint 15). The figure of merit speed power product of low power Schottky TTL is ___________ PJ? 10PJ 20PJ 30PJ 19PJ None Hint 16). In which one of the following, the power dissipation is high? Totem pole Open collector Both a and b None of the above None Hint 17). Which one of the following is not an example for low power Schottky TTL? 740L 74LS193 74LS02 None of the above None Hint 18). Which one of the following is an example for Schottky TTL logic gate? 7402 74H02 74S02 None of the above None Hint 19). The figure shown below is a circuit diagram of _____________? Open resistor Open collector Pull up resistor None of the above None Hint 20). Which gate is used in the below circuit diagram? AND OR NOR EXOR None Hint Open Collector MCQs for Interviews 21). In which one of the following the operating speed is low? Totem pole Open collector Both a and b None of the above None Hint 22). The equation X=A+B is the Boolean expression of ____________ logic gate? AND OR NAND None of the above None Hint 23). Which one of the following is an example for HTTL logic gate? 7402 74H02 74L02 None of the above None Hint 24). Which one of the following TTL type have high resistor values? LTTL HTTL TTL None of the above None Hint 25). Which one of the following resistors keeps the input always high? Pull up Pull down Both a and b None of the above None Hint 26). Which one of the following will drive external loads? Push pull Open drain Both a and b None of the above None Hint 27). The figure shown below is a circuit diagram of _____________? Open resistor Open collector Pull up resistor None of the above None Hint 28). The 74LS02 is the example for ____________ transistor-transistor logic gate? Low power High power Low power Schottky None of the above None Hint 29). Which one of the following TTL gate is a first gate in TTL logic family? LTTL HTTL TTL None of the above None Hint 30). The equation X=A.B is the Boolean expression of ____________ logic gate? AND OR NAND None of the above None Hint Open Collector MCQs for Exams 31). Which one of the following TTL type have low resistor values? LTTL HTTL TTL None of the above None Hint 32). The figure shown below is a circuit diagram of _____________? Resistor Circuit Open resistor Open collector Pull down resistor None of the above None Hint 33). Which one of the following is an example for LTTL logic gate? 7402 74H02 74L02 None of the above None Hint 34). The TTL ICs are categorized into _____________ types? One Two Three Five None Hint 35). What is the standard form of LSTTL? Low Power Standard Transistor-Transistor Logic Low Power Schottky Transistor Transformer Logic Low Power Simple Transistor Logic None of the above None Hint Read more about Open Collector Please fill in the comment box below. Time's up
