Recent questions tagged torque

1 answer 26 views

Describe spring control method of producing controlling torque in measuring instrument. Write any two properties required for spring material.

asked Sep 6, 2018 by Shimroz123
1 answer 7 views

Name the different torque and their function in measuring instrument.

asked Sep 6, 2018 by Shimroz123
1 answer 5 views

State the function of controlling torque in electrical measuring instrument.

asked Sep 6, 2018 by Shimroz123
1 answer 10 views

List the different methods to produce damping torque.

asked Sep 6, 2018 by Shimroz123
1 answer 5 views

State the function of controlling torque. Write two types of it.

asked Sep 6, 2018 by Shimroz123
1 answer 22 views

In a double squirrel cage induction motor, good starting torque is produced as (A) Large current flows through the outer high resistance winding. (B) Large current flows through the inner high resistance winding. (C) Small current flows through the outer high resistance winding. (D) Large current flows through the inner low resistance winding.

asked May 8, 2018 in Electrical Machine by Shimroz123
1 answer 32 views

Ideally, the damping torque should be  (1) Proportional to velocity of the moving system and operating current.  (2) Proportional to the velocity of the moving system but independent of operating current.  (3) Independent of the velocity of the moving system and proportional to the operating current.  (4) Independent of the velocity of the moving system and operating current.

asked Apr 30, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 21 views

Torque developed by a three-phase, 400V, induction motor is 100 N -m. If the applied voltage is reduced to 200-V, the d'veloped torque will be

asked Apr 29, 2018 in Electrical Machine by Shimroz123
1 answer 30 views

Torque angle for the synchronous machine is the angle between (A) stator magnetic field and rotor magnetic field (B) stator magnetic field and net magnetic field in the air gap (C) rotor magnetic field and net magnetic field in the air gap (D) excitation voltage and impedance voltage drop

asked Apr 28, 2018 in Electrical Machine by Shimroz123
1 answer 44 views

The meter which does not have any component in it to provide control torque is (A) Electrodynamometer for current measurement (B) Electrodynamometer for voltage measurement (C) Electrodynamometer for power measurement. (D) Electrodynamometer for power factor measurement.

asked Apr 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 118 views

The torque developed by any 3-phase induction motor at 0.8 p.u. slip is (A) Full-load torque (B) unstable torque (C) starting torque (D) break down

asked Apr 28, 2018 in Electrical Machine by Shimroz123
1 answer 75 views

The torque produced in wattmeter is proportional to

asked Apr 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 20 views

The shaft torque of a d.c. motor is less than its armature torque because of .......... losses.

asked Mar 26, 2018 in DC motor by Shimroz123
1 answer 15 views

The maximum torque of d.c. motors is limited by?

asked Mar 26, 2018 in DC motor by Shimroz123
1 answer 28 views

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

asked Mar 20, 2018 in Synchronous machine by Shimroz123
0 answers 33 views

The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as?

asked Mar 20, 2018 in Synchronous machine by Shimroz123
1 answer 38 views

What is the maximum value of torque angle in synchronous motor?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
0 answers 22 views

Why a dc series motor has a high starting torque?

asked Mar 15, 2018 in Electrical Engineering by Quiz
0 answers 15 views

Why high starting torque is required?

asked Mar 15, 2018 in Electrical Engineering by Quiz
0 answers 26 views

What is the formula of torque?

asked Mar 15, 2018 in Electrical Machine by Quiz
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