Neco Model Questions Vol1 2022 Physics Question 2

Practice objective / multiple choice question 2 from the 2022 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • objective

An assembly of gears consists of two successive gear pairs. Gear A (20 teeth) drives Gear B (40 teeth); Gear B is rigidly attached to Gear C (30 teeth) which drives Gear D (60 teeth). The input shaft (Gear A) rotates at 1500 rpm and the power supplied to the gear train is 2.0 kW. The overall mechanical efficiency of the train is 80 %. Determine (a) the angular speed of the output shaft (Gear D) in rpm and (b) the torque transmitted by the output shaft in N·m (give the torque to two significant figures).

Answer Options

A. 300 rpm, 35 N·m
Correct Answer B. 375 rpm, 41 N·m
C. 250 rpm, 30 N·m
D. 420 rpm, 48 N·m
Correct Answer
B
Correct Option:
375 rpm, 41 N·m

About This Question

This is Neco Model Questions Vol1 2022 Physics Question 2. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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