Capacitor Start Capacitor Run Motor Question & Answers February 21, 2023 By Wat Electrical This article lists 50 Capacitor Start Capacitor Run Motor MCQs for engineering students. All the Capacitor Start Capacitor Run Motor 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 Capacitor Start Capacitor Run Motor. Capacitor-type motors are classified into two types namely, start-type capacitor motors and run-type capacitor motors or dual run-type capacitor motors. A start-type capacitor motor raises the motor's starting torque and operates in on-off conditions at 75 % speed. Whereas a run-type capacitor motor energizes the auxiliary-type winding to generate a dynamic magnetic-based field during the operation of the motor. A combination of start and run type motor is a capacitor start run motor (CSCR) or two-value capacitor. The components of the Capacitor Start Capacitor Run Motor include a stator, and cage rotor, with 2 windings. XA=1/2PifCA is the capacitance reactance-based formula of a starting winding. Where 'f is the frequency, Xa is the winding reactance, and C is the capacitance. The advantages of the Capacitor Start Capacitor Run Motor include greater efficiency, higher pull-out, and greater inertia. The disadvantages of induction-type motors include low position, speed, and starting torque. The applications of Capacitor Start Capacitor Run Motor include air compressions and refrigeration. 1). Which of the following are the components of Capacitor Start Capacitor Run Motor? Cage rotor Stator Windings All the above Hint 2). Which of the following are the types of stator windings in Capacitor Start Capacitor Run Motor? Auxilary Main Secondary Both a and b Hint 3). At what angles does the windings in Capacitor Start Capacitor Run Motor are placed? 0 90 120 180 Hint 4). How many capacitors does a Capacitor Start Capacitor Run Motor has? 2 3 4 5 Hint 5). A Capacitor Start Capacitor Run Motor is also called? Two value capacitor motor Three value capacitor motor Single value capacitor motor None of the above Hint 6). Which of the following is the capacitance reactance based formula of a starting winding? XA=1/2PifCA XA=2PifCA XA=1/PifCA XA=1/fCA Hint 7). At ___ speed does this motor disconnects the starting capacitor? Synchronous Asynchronous Constant Both b and c Hint 8). Which of the following are the properties of long run capacitor? Oil filled paper Long period rated Water filled paper Both a and b Hint 9). Which of the following are the advantages of Capacitor Start Capacitor Run Motor? Greater efficiency Higher pull-out Greater inertia All the above Hint 10). Which of the following are the applications of Capacitor Start Capacitor Run Motor? Air compressions Refrigeration’s Pumping All the above Hint 11). Which of the following is the phase of Capacitor Start Capacitor Run Motor? Single Dual 3 Both a and c Hint 12). Which of the following are the components of stator? Frame Core Windings All the above Hint 13). Which of the following are the types of rotor? Squirrel cage Phase wound Split Both a and b Hint 14). ____ excites rotor winding? AC supply DC supply ADC supply All the above Hint 15). A field type winding in a rotor induces constant ____ field in its core? Magnetic Electric Both a and b None of the above Hint 16). Which of the following is the synchronous speed of CSCR induction type motor? 70 to 90% 75 to 80% 75 to 89% 60-99% Hint 17). A CSCR induction type motor has ____ better property? Power factor Cost Resistance All the above Hint 18). Which of the following are the components of AC type motor? Stator Rotor Shaft All the above Hint 19). Which of the following is the technique for handling the speed of AC type motor? Altering frequency Altering time period Constant frequency Constant time period Hint 20). Which of the following techniques are used for AC frequency type motor to adjust its AC frequency? VFD ASD AC inverter All the above Hint Capacitor Start Capacitor Run Motor MCQs for Exams 21). Which of the following are AC type motors? Synchronous Asynchronous Induction Both a and c Hint 22). Which of the following is the input energy of synchronous type motor? Electric Mechanical Chemical All the above Hint Read more about Induction Motors. 23). A synchronous type motor is a ___ type of motor? Not self start Self start Friction Non-friction Hint 24). Induction type motor is also called? Asynchronous type motor Synchronous type motor Time dependent Both b and c Hint Read more about Asynchronous Type Motor 25). A Induction type uses ___ phases? Single Three Two Both a and b Hint 26). Which of the following are the advantages of induction type motor? Simple Not expensive Low maintenance All the above Hint 27). Which of the following are the disadvantages of induction type motor? Low position control Minimum speed Low starting torque All the above Hint 28). Which of the following are the problems raised in AC type motor? Eddy current losses Poor positioning Sparking All the above Hint Read more about eddy current. 29). Which of the following are the applications of AC type motor? Blowers Washing machines Disk drivers All the above Hint 30). Which of the following is the steps for choosing a AC type motor? Minimum power factor Greater efficiency Greater torque All the above Hint 31). Which of the following are the types of capacitor type motor? Run capacitor Start capacitor Stop capacitor Both a and b Hint 32). Which of the following is the power ratings of a start type capacitor? 70 microfarads 80 microfarads 90 microfarads 100 microfarads Hint 33). Which of the following is the voltage classification of a start capacitor type motor? 125V, 165V, 250V, 330V 200V, 130V, 150V, 500V 200V, 170V, 150V, 500V 290V, 130V, 150V, 500V Hint 34). Which of the following are the components of start type capacitor motor? LC RC RL RLC Hint 35). An LC type circuit is also called? Resonate type of circuit Tank circuit Tuned circuit All the above Hint 36). Which of the following is the function of LC circuit? Bandpass filter Band elimination filter Band stop filter Both b and c Hint 37). Which of the following are the applications of LC circuits? Tuners Filters Oscillators All the above Hint 38). In which of the frequency term does a LC circuit defines the frequency variable? Real Imaginary Zero All the above Hint 39). Which of the following is the resonant frequency of LC circuit? 1/ sqrt[LC] 1/ LC 1/ 2LC L/C Hint 40). Which of the following are the units of inductor? Farads Ohms Henry Seconds Hint Read more about Inductor Types . Capacitor Start Capacitor Run Motor MCQs for Students 41). Which of the following are the units of capacitor? Farads Ohms Henry Seconds Hint 42). Which of the following are the units of angular frequency? Radians per seconds Radians Meters Kilo meters Hint 43). Which of the following is the frequency formula? wo/2Pi 2Pi/wo 1/ 2Pi wo Both b and c Hint 44). Which of the following is the capacitor range of run type motor? 1.5 to 100 micro farads 100 micro farads to 150 micro farads 120 to 150 micro farads 300 micro farads Hint 45). Which of the following is the application of dual run type capacitor? Compressor motor Fan motor Hydraulic motor Both a and b Hint 46). Which of the following are the terminals of dual run type capacitors? FAN HERM Common C All the above Hint 47). Which of the following is the shape of dual run type capacitor? Rectangle Hexa Round Triangle Hint 48).Which of the following type of capacitor improves AC compressors, fan’s operation in a motor along with compressor? Single Run Dual run Single start Dual start Hint 49). Which of the following are the protection levels of capacitor run circuits? Zero protection Failed open circuit Fail short circuit All the above Hint 50). A motor type capacitor is ___ type of capacitor? Electrical Mechanical Chemical Both b and c Hint For More MCQs Synchronous motor MCQs Reluctance motor MCQs Inductance motor MCQs Time's up
