DEOGIRI INSTITUTE OF ENGINEERING & MANAGEMENT STUDIES, AURANGABAD.MECHANICAL ENGINEERING DEPARTMENT (2012-13)

RE TEST: TOM – I CLASS: SE CDATE: 25/03/2013 TIME: 1Hr MARKS: 20

Q1. The lengths of various links of a mechanism, as shown in Fig.1, are: OA = 0.3 m, AB = 1 m, CD = 0.8 m, and AC = CB. Determine, for the given configuration, the velocity of the slider D if the crank OA rotates at 60 r.p.m. in the clockwise direction. Also find the angular velocity of the link CD. Use instantaneous centre method.Q2. Find the acceleration of the slider D if the crank OA rotates at 60 r.p.m. in the anticlockwise direction. Use Relative velocity and acceleration method. (Refer Fig. 1)Q3. In a Whitworth quick return motion, as shown in Fig. 2. OA is a crank rotating at 30 r.p.m. in a counter clockwise direction. The dimensions of various links are: OA = 150 mm; OC = 100 mm; CD = 125 mm; and DR = 500 mm. Determine the velocity of the sliding block R and the angular velocity of the slotted lever CA.

Fig.1 Fig.2

DEOGIRI INSTITUTE OF ENGINEERING & MANAGEMENT STUDIES, AURANGABAD.MECHANICAL ENGINEERING DEPARTMENT (2012-13)

RE TEST: TOM – I CLASS: SE CDATE: 25/03/2013 TIME: 1Hr MARKS: 20

Q1. The lengths of various links of a mechanism, as shown in Fig.1, are: OA = 0.3 m, AB = 1 m, CD = 0.8 m, and AC = CB. Determine, for the given configuration, the velocity of the slider D if the crank OA rotates at 60 r.p.m. in the clockwise direction. Also find the angular velocity of the link CD. Use instantaneous centre method.

Q2. Find the acceleration of the slider D if the crank OA rotates at 60 r.p.m. in the anticlockwise direction. Use Relative velocity and acceleration method. (Refer Fig. 1)

Q3. In a Whitworth quick return motion, as shown in Fig. 2. OA is a crank rotating at 30 r.p.m. in a counter clockwise direction. The dimensions of various links are: OA = 150 mm; OC = 100 mm; CD = 125 mm; and DR = 500 mm. Determine the velocity of the sliding block R and the angular velocity of the slotted lever CA.

Fig.1 Fig.2